Census 2021 round (cens

1.1. Contact organisation

Statistics Austria

1.2. Contact organisation unit

Directorate Social Statistics, Demography and Health, Register-based census

1.3. Contact name

Confidential because of GDPR

1.4. Contact person function

Confidential because of GDPR

1.5. Contact mail address

Guglgasse 13, 1110 Vienna, Austria

1.6. Contact email address

Confidential because of GDPR

1.7. Contact phone number

Confidential because of GDPR

1.8. Contact fax number

Confidential because of GDPR

2.1. Metadata last certified

4 October 2024

2.2. Metadata last posted

4 October 2024

2.3. Metadata last update

4 October 2024

3.1. Data description

The data present the results of the 2021 EU census on population and housing, following Regulation (EC) 763/2008; Regulation (EU) 2017/543; Regulation (EU) 2017/712 and Regulation (EU) 2017/881.

3.1.1. Impact of the COVID-19 pandemic on census methodology

No impact from COVID-19 pandemic on census methodology.

3.2. Classification system

The following classification systems were used:

1. Nomenclature of Territorial Units for Statistics (NUTS 2021)

2. International Standard Classification of Education (ISCED-2011)

3. International standard classification of occupations (ISCO-08)

4. Statistical Classification of Economic Activities in the European Community (NACE Rev 2)

3.3. Coverage - sector

Not applicable.

3.4. Statistical concepts and definitions

The information is given separately for each census topic. See the sub-concepts 3.4.1 - 3.4.37.

3.4.1. Statistical concepts and definitions - Usual residence

‘Usual residence’ is the place where a person normally spends the daily period of rest, regardless of temporary absences for purposes of recreation, holidays, visits to friends and relatives, business, medical treatment or religious pilgrimage.

The following persons alone shall be considered to be usual residents of the geographical area in question:

‘usual residence’ means the place of legal or registered residence.

Persons usually resident in the place of enumeration but absent, or expected to be absent, at the time of the census for less than 90 days are considered as temporarily absent persons and thus included in the total population. In contrast, persons living or expected to live outside the place of enumeration for 90 days or more are not considered temporarily absent and are therefore excluded from the total population. Persons who are enumerated but do not meet the criteria for usual residence in the place of enumeration, i.e. do not live or do not expect to live in the place of enumeration for a continuous period of at least 90 days, are considered temporarily present and are therefore not counted in the total usually resident population. Application of the definition of the 'usual residence': The main residences are the basis for the usual residence. According to the time spent there, the distance to the location of work and the residence of the relatives a person has the legal obligation to choose one main residence. The legal basis is the registration law. These main residences are recorded by the municipalities and entered in the central residence register.

3.4.2. Statistical concepts and definitions - Sex

Sex that is registered in the birth certificate. As a rule, this refers to the biological sex. However, a person can have his/her gender changed in the birth certificate (and thus Central Civil Status Register) under certain circumstances (gender reassignment surgery not necessary, but gender alignment has to have taken place). Persons with sex other than male or female are split to male or female by estimation.

3.4.3. Statistical concepts and definitions - Age

The age reached in completed years at the reference date.

3.4.4. Statistical concepts and definitions - Marital status

Marital status is defined as the (legal) conjugal status of an individual in relation to the marriage laws (or customs) of Austria (that is the de jure status).

A person is classified according to his/her most recently acquired legal marital status at the reference date.

Legal Basis for opposite and same sex marriage: "Gesetz zur Vereinheitlichung des Rechts der Eheschließung und der Ehescheidung im Lande Österreich und im übrigen Reichsgebiet" (dRBGl. I S 807/1938 idgF)

Possibility to divorce or legally separate: The possibility to divorce exists and is regulated in the law for marriages (dRBGl. I S 807/1938). There is no status of "legally separated" in Austria.

Minimum age for marriages: 18 years in general. 16 years under certain conditions.

Minimum age for opposite-sex registered partnership: 18

Minimum age for same-sex registered partnership: 18

3.4.5. Statistical concepts and definitions - Family status

Family status is measured in terms of partner, lone parent or child.

The family nucleus is defined in the narrow sense, that is as two or more persons who belong to the same household and who are related as husband and wife, as partners in a registered partnership, as partners in a consensual union, or as parent and child. Thus a family comprises a couple without children, or a couple with one or more children, or a lone parent with one or more children. This family concept limits relationships between children and adults to direct (first-degree) relationships, that is between parents and children.

Child (son/daughter) refers to a blood, step- or adopted son or daughter (regardless of age or marital status) who has usual residence in the household of at least one of the parents, and who has no partner or own children in the same household. Foster children are not included. A son or daughter who lives with a spouse, with a registered partner, with a partner in a consensual union, or with one or more own children, is not considered to be a child.

Two persons are considered to be partners in a 'consensual union' when they
- belong to the same household, and
- have a marriage-like relationship with each other, and
- are not married to or in a registered partnership with each other.

'Skip-generation households' (households consisting of a grandparent or grandparents and one or more grandchildren, but no parent of those grandchildren) are not included in the definition of a family.

3.4.6. Statistical concepts and definitions - Household status

Household-dwelling concept is applied. The household-dwelling concept considers all persons living in a housing unit to be members of the same household, such that there is one household per occupied housing unit. In the household dwelling concept, then, the number of occupied housing units and the number of households occupying them is equal, and the locations of the housing units and households are identical.

The category 'Persons living in a private household' comprises 'Persons in a family nucleus' and 'Persons not in a family nucleus'.
The category 'Persons in a family nucleus' comprises all persons who belong to a private household that contains a family nucleus of which they are a member.
'Persons not in a family nucleus' comprises all persons who either belong to a non-family household or to a family household without being member of any family nucleus in that household.
A non-family household can be a one-person household ('Living alone') or a multiperson household without any family nucleus.
The category 'Not living alone' comprises persons that live either in a multiperson household without any family nucleus or in a family household without being member of any family nucleus in that household.

3.4.7. Statistical concepts and definitions - Current activity status

Current activity status' is the current relationship of a person to economic activity, based on a reference period of one week, which is defined as the last seven days prior to enumeration (25 October 2021 - 31 October 2021).
The 'currently economically active population' comprises all persons who fulfill the requirements for inclusion among the employed or the unemployed.
'Employed' persons comprise all persons aged 15 years or over who during the reference week: (a) performed at least one hour of work for pay or profit, in cash or in kind, or (b) were temporarily absent from a job in which they had already worked and to which they maintained a formal attachment, or from a self-employment activity.
The 'unemployed' comprise all persons aged 15 years or over who were: (a) 'without work', that is, were not in wage employment or self-employment during the reference week; and (b) 'currently available for work', that is, were available for wage employment or self-employment during the reference week; and (c) 'seeking work', that is, had taken specific steps to seek wage employment or self-employment within the reference week.
Persons, who solely receive capital income, are included in the group “Others” instead of “Pension or capital income recipients”.

3.4.8. Statistical concepts and definitions - Occupation

Occupation refers to the type of work done in a job. ‘Type of work’ is described by the main tasks and duties of the work.

Persons are classified according to the occupation they had during their most recent employment. The categories included in the breakdown 'occupation' correspond to the major groups of the ISCO-08 (COM) classification.

Persons under the age of 15 years, as well as persons aged 15 or over that were:

— not economically active during the reference week, or

— unemployed, never worked before (i.e. they have never been employed in their lives)

are classified under 'not applicable'.

The allocation of a person within the breakdowns of the topics 'Occupation', 'Industry' and 'Status in employment' is based on the same job.

Information on occupation is only partly available in registers and had to be partly estimated. For quality reasons no detailed data on occupation is provided.

3.4.9. Statistical concepts and definitions - Industry

Industry (branch of economic activity) refers to the kind of production or activity of the establishment or similar unit in which the job of an employed person is located.

Persons doing more than one job shall be allocated an industry (branch of economic activity) based on their main job, which is to be identified according to the time spent on the job or (if not available) the income received.

The breakdown by industry is available for persons aged 15 or over that were employed during the reference week.

Persons are classified according to the industry they worked in during their most recent employment. The categories included in the breakdown 'industry' list the 21 sections of the NACE Rev. 2 classification and appropriate aggregates. The allocation of a person within the breakdowns of the topics 'Occupation', 'Industry' and 'Status in employment' is based on the same job. Persons employed in an enterprise abroad, as well as unemployed persons, who held a previous employment in an unknown place of work, are classified under 'not stated'.

3.4.10. Statistical concepts and definitions - Status in employment

An ‘employee’ is a person who works in a ‘paid employment’ job, that is a job where the explicit or implicit contract of employment gives the incumbent a basic remuneration, which is independent of the revenue of the unit for which he/ she works. An ‘employer’ is a person who, working on his or her own account or with a small number of partners, holds a ‘self- employment’ job and, in this capacity, on a continuous basis (including the reference week) has engaged one or more persons to work for him/her as ‘employees’.

Persons, who are solely members of producers co-operatives, cannot be detected and are therefore excluded.

3.4.11. Statistical concepts and definitions - Place of work

The location of the place of work is the geographical area in which a currently employed person does his/her job.
The place of work of those mostly working at home is the same as their usual residence. The term ‘working’ refers to work done as an ‘employed person’ as defined under the topic ‘Current activity status’.

Persons who do not have a fixed place of work are counted on the legal unit.

3.4.12. Statistical concepts and definitions - Educational attainment

Educational attainment' refers to the highest level successfully completed in the formal educational system of the country where the education was received. Persons aged 15 years or over are classified under only one of the categories according to their educational attainment (highest completed level). Persons under the age of 15 years are classified under 'not applicable'.

For the total population in Austria, persons who have not completed compulsory education cannot be distinguished from those whose highest educational graduation is compulsory education as these categories were not differentiated in the population census 2001, which is the historical basis data for the Austrian educational attainment register.
Compulsory education in Austria includes primary and secondary education in terms of ISCED.
Therefore „less than primary education“ is an empty category.

3.4.13. Statistical concepts and definitions - Size of the locality

A locality is defined as a distinct population cluster that is an area defined by population living in neighboring or contiguous buildings.

Such buildings may be either:
(a) form a continuous built-up area with a clearly recognizable street formation; or
(b) though not part of such a built-up area, comprise a group of buildings to which a locally recognized place name is uniquely attached; or
(c) though not meeting either of the above two criteria, constitute a group of buildings, none of which is separated from its nearest neighbor by more than 200 meters.

3.4.14. Statistical concepts and definitions - Place of birth

The country where the birth took place is reported according to the boundaries existing in 2021.

If there is no information on place of birth in the registers it remains "unknown" (very few). Place of birth of persons with incomplete information from the CRR is validated by using the information of the other registers.

3.4.15. Statistical concepts and definitions - Country of citizenship

Citizenship is defined as the particular legal bond between an individual and his/her State, acquired by birth or naturalization, whether by declaration, option, marriage or other means according to the national legislation. A person with two or more citizenships is allocated to only one country of citizenship, to be determined in the following order of precedence:

1. reporting country

2. if the person does not have the citizenship of the reporting country: other EU Member State

3. if the person does not have the citizenship of another EU Member State: other country outside the European Union.

'EU Member State' means a country that is a member of the European Union on 1 January 2021. The list of countries in the breakdown 'Country of citizenship' shall only apply for statistical purposes.
For reporting countries that are EU Member States, the sub-category of the category 'citizenship not of reporting country, but other EU Member State' that refers to their Member State does not apply. For reporting countries that are not EU Member States, the category 'citizenship not of reporting country, but other EU Member State' shall be changed to 'citizenship of an EU Member State'.

3.4.16. Statistical concepts and definitions - Year of arrival in the country

The year of arrival is the calendar year in which a person most recently established usual residence in the country.

The data for 2021 refer to the time span between 1 January 2021 and the reference date.

3.4.17. Statistical concepts and definitions - Residence one year before

The relationship between the current place of usual residence and the place of usual residence one year prior to the census.

For all persons that have changed their usual residence more than once within the year prior to the reference date, the previous place of usual residence is the last usual residence from which they moved to their current place of usual residence. Children under one year of age are classified under 'Not applicable'.

3.4.18. Statistical concepts and definitions - Housing arrangements

The topic ‘Housing arrangements’ covers the whole population and refers to the type of housing in which a person usually resides at the time of the census. This covers all persons who are usual residents in different types of living quarters, or who do not have a usual residence and stay temporarily in some type of living quarters, or who are roofless, sleeping rough or in emergency shelters, when the census is taken.

'Other housing units' are huts, cabins, shacks, shanties, caravans, houseboats, barns, mills, caves or any other shelter used for human habitation at the time of the census, irrespective if it was designed for human habitation.
'Collective living quarters' are premises which are designed for habitation by large groups of individuals or several households and which are used as the usual residence of at least one person at the time of the census.
'Occupied conventional dwellings', 'other housing units' and 'collective living quarters' together represent ‘living quarters'. Any 'living quarter' must be the usual residence of at least one person.

The sum of occupied conventional dwellings and other housing units represents 'housing units'.
The homeless (persons who are not usual residents in any living quarter category)are persons living in the streets without a shelter that would fall within the scope of living quarters (primary homelessness).

3.4.19. Statistical concepts and definitions - Type of family nucleus

The family nucleus is defined in a narrow sense; that is as two or more persons who belong to the same household and who are related as husband and wife, as partners in a registered partnership, as partners in a consensual union, or as parent and child. Thus a family comprises a couple without children or a couple with one or more children, or a lone parent with one or more children. This family concept limits relationships between children and adults to direct (first-degree) relationships, that is, between parents and children.

Child (son/daughter) refers to a blood, step- or adopted son or daughter (regardless of age or marital status) who has usual residence in the household of at least one of the parents, and who has no partner or own children in the same household. Foster children are not included. A son or daughter who lives with a spouse, with a registered partner, with a partner in a consensual union, or with one or more own children, is not considered to be a child. A child who alternates between two households (for instance if his or her parents are divorced) shall consider the one where he or she spends the majority of the time as his or her household.
The term couple shall include married couples, couples in registered partnerships, and couples who live in a consensual union.
Registered partnerships are reported only by countries that have a legal framework regulating partnerships that:
(a) lead to legal conjugal obligations between two persons;
(b) are not marriages;
(c) prevent persons to commit themselves into multiple partnerships with different partners.
Two persons are considered to be partners in a 'consensual union' when they
— belong to the same household, and
— have a marriage-like relationship with each other, and
— are not married to or in a registered partnership with each other.
'Skip-generation households' (households consisting of a grandparent or grandparents and one or more grandchildren, but no parent of those grandchildren) are not included in the definition of a family.

3.4.20. Statistical concepts and definitions - Size of family nucleus

3.4.21. Statistical concepts and definitions - Type of private household

Private households are identified using the ‘household- dwelling concept’.

The household-dwelling concept considers all persons living in a housing unit to be members of the same household, such that there is one household per occupied housing unit.

Private households of type ‘Couple without resident children’ may consist of 2 or more people. For instance, foster child(ren), related or non-related persons of the couple may be such additional household member.

3.4.22. Statistical concepts and definitions - Size of private household

Private households are identified using the ‘household- dwelling concept’.

The household-dwelling concept considers all persons living in a housing unit to be members of the same household, such that there is one household per occupied housing unit.

3.4.23. Statistical concepts and definitions - Tenure status of households

The topic ‘Tenure status of households’ refers to the arrangements under which a private household occupies all or part of a housing unit.

3.4.24. Statistical concepts and definitions - Type of living quarter

A living quarter is housing which is the usual residence of one or more persons.

'Conventional dwellings' are structurally separate and independent premises at fixed locations which are designed for permanent human habitation and are, at the reference date, either used as a residence, or vacant, or reserved for seasonal or secondary use.
'Separate' means surrounded by walls and covered by a roof or ceiling so that one or more persons can isolate themselves. 'Independent' means having direct access from a street or a staircase, passage, gallery or grounds.
'Other housing units' are huts, cabins, shacks, shanties, caravans, houseboats, barns, mills, caves or any other shelter used for human habitation at the time of the census, irrespective if it was designed for human habitation.
'Collective living quarters' are premises which are designed for habitation by large groups of individuals or several households and which are used as the usual residence of at least one person at the time of the census.
'Occupied conventional dwellings', 'other housing units' and 'collective living quarters' together represent‘living quarters'. Any 'living quarter' must be the usual residence of at least one person.

3.4.25. Statistical concepts and definitions - Occupancy status

‘Occupied conventional dwellings’ are conventional dwellings which are the usual residence of one or more persons at the time of the census. ‘Unoccupied conventional dwellings’ are conventional dwellings which are not the usual residence of any person at the time of the census.

3.4.26. Statistical concepts and definitions - Type of ownership

'Type of ownership' refers to the ownership of the dwelling and not to that of the land on which the dwelling stands. It shows the tenure arrangements under which the dwelling is occupied.

'Owner-occupied dwellings' are those where at least one occupant of the dwelling owns parts or the whole of the dwelling. 'Cooperative ownership' refers to ownership within the framework of a housing cooperative.
'Rented dwellings' are those where at least one occupant pays a rent for the occupation of the dwelling, and where no occupant owns parts or the whole of the dwelling. Information on dwellings in co-operative ownership cannot be provided because it is not available in the buildings and dwellings register (BDR). The BDR includes 'Dwellings in co-operative ownership' in the category 'Rented dwellings'. Housing co-operatives are one type of non-profit housing associations. People do not pay a rent but a fee for using the dwelling (legally spoken). Technically it is the same as a rent.

3.4.27. Statistical concepts and definitions - Number of occupants

The number of occupants of a housing unit is the number of people for whom the housing unit is the usual residence.

3.4.28. Statistical concepts and definitions - Useful floor space

Useful floor space is defined as the floor space measured inside the outer walls excluding non-habitable cellars and attics and, in multi-dwelling buildings, all common spaces.

3.4.29. Statistical concepts and definitions - Number of rooms

A ‘room’ is defined as a space in a housing unit enclosed by walls reaching from the floor to the ceiling or roof, of a size large enough to hold a bed for an adult (4 square meters at least) and at least 2 meters high over the major area of the ceiling.

3.4.30. Statistical concepts and definitions - Density standard (floor space)

The topic ‘Density standard (floor space)’ relates the useful floor space in square meters to the number of occupants, as specified under the topic ‘Number of occupants’.

3.4.31. Statistical concepts and definitions - Density standard (number of rooms)

The topic ‘Density standard (number of rooms)’ relates the number of rooms to the number of occupants, as specified under the topic ‘Number of occupants’.

3.4.32. Statistical concepts and definitions - Water supply system

Whether the conventional dwelling is equipped with piped water.

3.4.33. Statistical concepts and definitions - Toilet facilities

Whether the conventional dwelling is equipped with toilet facilities.

3.4.34. Statistical concepts and definitions - Bathing facilities

Whether the conventional dwelling is equipped with bathing facilities.

3.4.35. Statistical concepts and definitions - Type of heating

Conventional dwelling is considered as centrally heated if heating is provided either from a community heating centre or from an installation built in the building or in the conventional dwelling, established for heating purposes, without regard to the source of energy.

3.4.36. Statistical concepts and definitions - Type of building

The topic ‘Dwellings by type of building’ refers to the number of dwellings in the building in which the dwelling is placed.

3.4.37. Statistical concepts and definitions - Period of construction

The topic 'Dwellings by period of construction' refers to the year when the building in which the dwelling is placed was completed.

In the Austrian buildings and dwellings register the categorisation is '1919 to 1944' and '1945 to 1960'.

3.5. Statistical unit

The EU programme for the 2021 population and housing censuses includes data on persons, private households, family nuclei, conventional dwellings and living quarters.

3.6. Statistical population

The persons enumerated in the 2021 census are those who were usually resident in the territory of the reporting country at the census reference date. Usual residence means the place where a person normally spends the daily period of rest, regardless of temporary absences for purposes of recreation, holidays, visits to friends and relatives, business, medical treatment or religious pilgrimage.

3.7. Reference area

Data are available at different levels of geographical detail in EU countries: national, NUTS2/NUTS3 regions and local administrative units (LAU), grids.

3.8. Coverage - Time

Data refer to the situation in the reporting country at the census reference date.

3.9. Base period

Not applicable.

Counts of statistical units.

Information is provided in the sub-concepts 5.1 - 5.3.

5.1. EU census reference date

31 October 2021

5.2. National census reference date

31 October 2021

5.3. Differences between reference dates of national and EU census publications

No differences.

6.1. Institutional Mandate - legal acts and other agreements

Register Census Act, Federal Law Gazette I No. 33/2006 as amended EU regulation 763/2008 on population and housing censuses EU implementing regulation 2017/881 on population and housing censuses, as regards the modalities and structure of the quality reports and the technical format for data transmission EU regulation 2017/712 establishing the reference year and the programme of the statistical data and metadata for population and housing censuses EU implementing regulation 2017/543 on population and housing censuses as regards the technical specifications of the topics and of their breakdowns

6.1.1. Bodies responsible

Statistics Austria

6.2. Institutional Mandate - data sharing

Federal Statistics Act, Federal Law Gazette I No 163/1999 as amended

7.1. Confidentiality - policy

Confidentiality - Regulation (EU) 2017/712 Art 4 and 5; The data treatment is regulated in the legal basis for the register-based census: Register Census Act, Federal Law Gazette I No. 33/2006 as amended

7.2. Confidentiality - data treatment

Confidentiality - Regulation (EU) 2017/712 Art 4 and 5; The data are compiled from various spending-registers that provide their information. To ensure data privacy protection, the names and other personal identifiers of the individuals are not transmitted to the National Statistic Institute (NSI). Instead, a branch-specific personal identification number for official statistics (bPIN OS) is required before delivering the data to Statistics Austria. Each individual has a unique number. The administrative units get an encrypted version of these bPIN-OS which has to be linked to the data that is sent to Statistics Austria. Hence, only Statistics Austria is able to decode the bPIN-OS and to link the individuals. This is done without names and other personal identifiers. The SDC method chosen for the Austrian census is a targeted record swapping approach ("Record Swapping"). It minimises the risk of disclosure, preserves the additivity and consistency of output tables, is easy to implement and to understand, and it is possible to conduct special analyses outside the Census Hub without changing the results. Our method has already been successfully used with the Register-based Labour Market Statistics in 2009-2020 and Register-based Census in 2011.

8.1. Release calendar

Data are made available 28 months after the end of the reference period (March 2024) in the Census Hub; for national release dates see 8.2.

8.2. Release calendar access

Access to the release calendar information at national level.

8.3. Release policy - user access

In line with the Community legal framework and the European Statistics Code of Practice Eurostat disseminates European statistics on its website respecting professional independence and in an objective, professional and transparent manner in which all users are treated equitably.
All the data from the 2021 EU population and housing census are available in the Census Hub, the main tool for dissemination of census data, by 31 March 2024.
Selected tables were also published in Eurostat’s online database, shortly after the final data provision deadline.

Decennial.

Information is provided in the sub-concepts 10.1 - 10.7.

10.1. Dissemination format - News release

Results from the Austrian census are published in various news releases. For a list of news releases.

10.2. Dissemination format - Publications

The first results on the population number and some demographic topics were published in November 2022. Three printed publications offering results of the Census 2021 were issued during summer 2023. These brochures have an analytical focus and present the results in a comprehensive way. One publication contains population results for Austria. The results of the Housing Census and the Census of Local Units of Employment were presented in separate brochures. Furthermore one english brochure containing results from all three Austrian census parts was issued at the beginning of 2024.

10.3. Dissemination format - online database

The interactive database (STATcube) is the most important way for users to access the results of the Census. Statistics Austria is offering the users the possibility to compile their own tables. As many data of the 2021 Census as possible are integrated in the databases. There are various kinds of access authorizations allowing users to test the databases for free and to retrieve more detailed information if they pay for full access to the database.

10.4. Dissemination format - microdata access

The Austrian Micro Data Center (AMDC)offers access for researchers to Census data. In addition microdata can be analysed in a safe center at Statistics Austria for persons with no allowance to use the AMDC.

10.5. Dissemination format - other

The tool STATatlas provides census results in maps, diagrams, animations and tables.

A methodological article discussing the new variables of the 2021 census and the comparability of the results of the 2011 and the 2021 census was published in January 2024.

Furthermore an extensive methodological report will be compiled and offered to users. In addition reports according to the guidelines for the standardized documentation structure at Statistics Austria will be provided.

10.6. Documentation on methodology

The documentation on methodology will be available as soon as it is finished at this website.

10.7. Quality management - documentation

The national quality report is available at this website.

11.1. Quality assurance

In the whole process the guidelines for Statistics Austria according to the Federal Statistics Act and the register based census law were applied.

11.2. Quality management - assessment

Statistics Austria developed a special quality-framework for the quality assessment of register-based statistics. For the evaluation of the data, four quality-related hyperdimensions are computed. On the register-level a) the quality of the documentation of data b) the usability of the data and c) the validity compared to an external source are assessed by three hyperdimensions. The fourth hyperdimension evaluates the quality of the imputations. A quality-indicator can be derived from these four hyperdimensions. For the combination of the quality-measures and for further details on the comprehensive quality-framework see the documentation on quality assessment.

11.2.1. Coverage assessment

Due to the definition and processing of the register-based census, population under-coverage is not considered to be a problem. This is due to the fact that all people with a main residence in Austria are considered for the Austrian census. However there may be the problem of population over-coverage. The problem arises if former main-residences are not deleted by the municipalities which are responsible for the actuality of the data. Therefore Statistics Austria developed a comprehensive framework to detect and delete these supernumerary cases in two steps. In the first step the inhabitants of questionable main residences are asked to confirm the status of the residence. In the second step the municipalities were asked to bring a confirmation of the questionable residence left from the first step. The main residences which can not be confirmed are not considered for the census. This way about 0.7% of the initial population was deleted.

11.2.2. Post-enumeration survey(s)

No post-enumeration survey was carried out.

12.1. Relevance - User Needs

Counts of statistical units

12.2. Relevance - User Satisfaction

No user satisfaction surveys especially for census data are carried out.

12.3. Completeness

Data are complete. Availability in the Census Hub depends on the technical availability of data.