Central Statistics Office

Demography Section and Vital Statistics Section, Central Statistics Office Cork Ireland 

Central Statistics Office,

Skehard Rd,

Blackrock,

Cork

Ireland

T12 X00E

Total usual residence population for the purposes of qualified majority voting in the Council.

Eurostat Usual Residence Population concept

Total usual residence population at national level.

Usual resident population concept used (i.e. living in the State for a continuous period of at least 12 months or intend to stay in the State for 12 months) in 2022.

Annual population estimates are calculated by trending forwards the most recent census of population data. The estimated number of immigrants are added and the number of emigrants is subtracted in the following quarters. Likewise births for the subsequent period are added and deaths are subtracted. Allowance is also made for an estimated inter-regional migration and population aging. The annual population estimates in turn provide the base population for the following year and so on for subsequent years. The population estimates are subject to revision once the definitive results of the next census becomes available.

Person.

Usually resident population concept

Data are available at national level of geographical detail.

Calendar year for 2020

Not applicable

Person.

The reference date for population data is the end of the reference period (midnight of 31 December).

The Statistics Act 1993 governs the dissermination of national statistics.  The dissemination of data under the usual residence population concept is governed by reguation 1260/2013.Optional

Vital statistics data is obtained from the general registration office,

Citizenship data is obtained from the Irish Department of Justice.

All information supplied to the CSO is treated as strictly confidential. The Statistics Act, 1993 sets stringent confidentiality standards: Information collected may be used only for statistical purposes, and no details that might be related to an identifiable person or business undertaking may be divulged to any other government department or body.

These national statistical confidentiality provisions are reinforced by the following EU legislation:

• Council Regulation (EC) No 223/2009 on European statistics for data collected for EU statistical purposes.

Further details are outlined in the CSO's Code of Practice on Statistical Confidentiality.

Annexes:
CSO code of practice

All information supplied to the CSO is treated as strictly confidential. The Statistics Act, 1993 sets stringent confidentiality standards: Information collected may be used only for statistical purposes, and no details that might be related to an identifiable person or business undertaking may be divulged to any other government department or body.

These national statistical confidentiality provisions are reinforced by the following EU legislation:

• Council Regulation (EC) No 223/2009 on European statistics for data collected for EU statistical purposes.

Further details are outlined in the CSO's Code of Practice on Statistical Confidentiality.

Annexes:
CSO code of practice

http://www.cso.ie/en/newsandevents/statisticsdueforrelease/

http://www.cso.ie/en/newsandevents/statisticsdueforrelease/

Selected pre approved officials receive pre release access on the morning of release

https://www.cso.ie/en/aboutus/lgdp/csodatapolicies/csopolicyonpre-releaseaccess/

An annual electronic population estimates release is published on the CSO website

https://www.cso.ie/en/statistics/population/populationandmigrationestimates/

Selected data are available on the CSO PXSTAT service

https://data.cso.ie/product/PME

Eurostat data returns are available on the Eurostat website

https://ec.europa.eu/eurostat/web/main/data/database

Annual

Eurostat Website - News release for Eurostat outputs

The national annual release with end April reference period is published as a news release on the CSO website.

https://www.cso.ie/en/statistics/population/populationandmigrationestimates/

Eurostat website release for Eurostat outputs

The national annual release with end April reference period is published as a news release on the CSO website.

https://www.cso.ie/en/statistics/population/populationandmigrationestimates/

Eurostat population database for Eurostat outputs

The national output with an end of April annual reference period is disseminated on the Central Statistics Office Statbank service.

https://data.cso.ie/product/PME

Not currently applicable

Press releases and infographics are provided for national outputs.

https://www.cso.ie/en/releasesandpublications/ep/p-pme/populationandmigrationestimatesapril2022/

Please fill the information in the Annex File. 

Information governing coherence and methodology are contained in the background notes of the annual population estimates release

https://www.cso.ie/en/releasesandpublications/ep/p-pme/populationandmigrationestimatesapril2022/

The principle source of the migration estimates (which in turn feed into progress population quarterly estimates, using the most recent census as a base year, is the Labour Force Survey (LFS).

A two stage sample design is used by the LFS. This comprises a first stage sample of approximately 1,300 blocks (or small areas) selected at county level to proportionally represent eight strata reflecting population density. Each block is selected to contain, on average 60 dwellings and the sample of blocks is fixed for a period of about five years. In the second stage of sampling, 20 households are surveyed in each block.

Therefore the total quarterly sample at any point in time is designed to be approximately 26,000 households.

The survey results are weighted to agree with population estimates broken down by age, sex and region and is considered to be highly accurate in terms of its key estimates. In terms of the migration data no specific error calculations have been made. Ireland conducts a five yearly Census and the inter Cenus migration flows are recalibrated after the full snd final Census results are published.

The data has wide national usage from government departments (particularly those involved in policy formation and planning), economists and research bodies. A number of special interest groups working in the area of migration and integration also require the data. International users include Eurostat, The European Commission and various international organisations

Data requested in Art. 4.1 of Reg. 1260/2013.

Regular contact is maintained with users via official briefings and press conferences.  There is also a dedicated email account for user queries:

mailto: Demography@cso.ie

All regulatory needs are currently met.

Data transmitted as requested in Art. 4.1 of Reg. 1260/2013.

The population and migration estimates are rebased every 5 years following the publication of the Census of population.  Following the publication of the 2016 Census of Population the usually resident population estimate was adjusted upward by 65,000 (1.3%).

The principle source of the migration estimates (which in turn feed into progress population quarterly estimates, using the most recent census as a base year, is the Labour Force Survey (LFS)

A two stage sample design is used by the LFS. This comprises a first stage sample of approximately 1,300 blocks (or small areas) selected at county level to proportionally represent eight strata reflecting population density. Each block is selected to contain, on average 60 dwellings and the sample of blocks is fixed for a period of about five years. In the second stage of sampling, 20 households are surveyed in each block.

Therefore the total quarterly sample at any point in time is designed to be approximately 26,000 households.

Households are asked to take part in the survey for five consecutive quarters and are then replaced by other households in the same block. Thus, one fifth of the households in the survey are replaced each quarter and the QNHS sample involves an overlap of 80% between two consecutive years.

The survey results are weighted to agree with population estimates broken down by age, sex and region. The survey is considered to be highly accurate in terms of its key estimates. In terms of the migration data, the survey is considered to be accurate, though no error calculations have been made.

The vital statistics data is register based and is therefore not subject to sampling error.

In addition to known sampling errors any survey will be subject to other non-sampling errors (for example measurement errors arising from questions not capturing the desired information accurately and some level of non=response). The exact level of the non-sampling error is far more difficult to measure than the sampling error and no formal estimate of the non-samping error is available in the LFS.

Information on the interviews is collected and analysed to help minimise non-sampling effects (including, for example, when interviews are concluded and their duration). This information is compared across the interview team to ensure no unusual variation in interviewer performance exists. Co-ordinates, as an additional check on the quality of the interviewer's work, call back to around 2% of households to check the quality of the collected data.

For the purposes of qualified majority voting in the Council, Member States shall provide the Commission (Eurostat) with data on the total population at national level at the reference time, in accordance with Article 2 ( c ), within eight months of the end of the reference year.

Data delivered within the agreed timeline

Regional data is geographically comparable from 2014, following revisions to the NUTS3 regions

Annual population estimates are available since 1951 (April reference) and since 2014 (December reference)

The total usual residence population  transmitted by the national statistical offices to Eurostat in the framework of the Usual Residence Population data collection may differ from those available in National Accounts, Labour Force Survey or in the survey on Income and Living Conditions. The difference is given by the population coverage (see metadata specific to each domain).

The total usual residence population  transmitted by the national statistical offices to Eurostat in the framework of the Usual Residence Population data collection may differ from those available in the rest of the Demographic domain. The difference is given by the population definition (see metadata specific to each domain).

The migration data is collected via the Labour Force Survey (LFS) data collection, therefore the cost and response burden are absorbed into this overall data collection process.

Irelands annual population data is revised following the five yearly Census for the intercensal period. 

Irelands annual population data is revised following the five yearly Census for the intercensal period. This process is currently ongoing. 

Coverage

The base population is the usually resident population as provided by the April 2016 Census of Population.

Source of Migration data

The principal source of information for the estimation of the gross annual migration flows is the Labour Force Survey (LFS), which also provides the basis for the classification of the flows by sex, age group, origin/destination and nationality.

The migration estimates are compiled with reference to movements in other migration indicators such as the number of Personal Public Service (PPS) numbers allocated to non-Irish nationals and the number of visas issued to Irish nationals to a number of the destinations including Australia, US and Canada.  In addition, data on National Insurance numbers (equivalent to PPS numbers) issued to Irish nationals in the UK is referenced.

Calculation of annual population estimates

The annual population estimates for mid-April in this release were calculated by trending forwards the previous Census of Population data. For example, the base population data for estimating the April 2016 figure was the number of males and females in each region by single year of age and nationality as established by the 2016 Census. From this base, each person was aged by one year, births for the period were added and deaths were subtracted. 

The estimated number of immigrants was then added and the number of emigrants was subtracted. Allowance was also made for estimated inter-regional migration in arriving at the final 2017 figures. The end result of this overall process provided the population estimate for April 2017 which in turn will provide the base population for the subsequent year and so on. The population estimates are subject to revision once the definitive results of the next census become available.

The population by nationality estimates are made possible by trending forwards the previous Census of Population and incorporating gross migration flows by nationality based on responses in the LFS.  Births by nationality are estimated using the distribution of the nationality of babies as recorded in the 2016 census, while deaths by nationality are also estimated based on recent census results on the nationality distribution of the population by single year of age.

Census is usually carried out every 5 Years. Labour Force Survey (LFS) and Vital Statistics data are compiled and collected quarterly.

The principle source of the migration estimates which in turn feed into progress population quarterly estimates, using the most recent census as a base year, is the Labour Force Survey (LFS).

Vital Statistics data is collected by the General Registration Office,

Citizenship acquisitions are collected by the Irish Department of Justice,

All data is capture electronically. All checking procedures are carried out on a quarterly basis.

See items 18.1 - 18.4

Population and Migration Estimates are subject to revisions once the definitive results from the census are available. The preliminary estimates in data collection and compilation conform to national and international standards.

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