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Reference metadata describe statistical concepts and methodologies used for the collection and generation of data. They provide information on data quality and, since they are strongly content-oriented, assist users in interpreting the data. Reference metadata, unlike structural metadata, can be decoupled from the data.

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Population (national level) (demo_pop)

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Reference Metadata in Euro SDMX Metadata Structure (ESMS)

Compiling agency: Eurostat, The Statistical Office of the European Union

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Eurostat’s annual data collections on population are structured as follows:

POPSTAT Population statistics data collection: The most in-depth annual national and regional demographic and migration data collection. The data relate to populations, births, deaths, immigrants, emigrants, marriages and divorces, and is broken down into several categories (Article 3 of Regulation (EU) No 1260/2013 and Article 3 of Regulation (EU) No 862/2007).

URESPOP Usually resident population: Usually resident population for the purpose of the qualified majority voting.
Formore specific information, please see the metadata on Usually resident population (Article 4 of Regulation (EU) No 1260/2013).

Member States send population data to Eurostat data as on of 31 December for the reference year under Regulation 1260/2013 on European demographic statistics. The data are conventionally published by Eurostat as population on 1 January of the following year (reference year + 1).

The aim is to collect annual mandatory and voluntary demographic data from the national statistical institutes. Mandatory data are those defined by the legislation listed under ‘6.1. Institutional mandate — legal acts and other agreements’.

The completeness of the demographic data collected on a voluntary basis depends on the availability and completeness of information provided by the national statistical institutes.

For more information on mandatory/voluntary data collection, see 6.1. Institutional mandate — legal acts and other agreements.

The following statistics are available.

Population on 1 January by sex and by:

  • single age and educational attainment / marital status / broad group of citizenship / broad group of country of birth;
  • five-year age group and citizenship / country of birth;
  • citizenship and broad group of country of birth / country of birth and broad group of citizenship;
  • broad age group and NUTS 3 (under regional data population folder);
  • single age and NUTS 2 (under regional data population folder);
  • five-year age group and NUTS 2 / NUTS 3 (under regional data population folder).

Population structure statistics: median age of population, proportion of population by various age groups, old age dependency ratio.

14 February 2025

Population on 1 January

Eurostat aims to collect population data as on 1 January from the EU Member States. The recommended definition is the "usually resident population" which represents the number of inhabitants of a given area on 1 January of the year in question (or on 31 December of the previous year). However, the population transmitted by the countries can also be either based on data from the most recent census adjusted by the components of population change produced since the last census, either based on population registers.

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. The following persons alone are considered to be usually residents of the geographical area in question:

  • those who have lived in their place of usual residence for a continuous period of at least 12 months before the reference time; or
  • those who arrived in their place of usual residence during the 12 months before the reference time with the intention of staying there for at least 1 year.

Citizenship denotes the particular legal bond between an individual and their State, acquired by birth or naturalization, whether by declaration, choice, marriage or other means according to national legislation.

Country of birth is the country of residence (in its current borders, if the information is available) of the mother at the time of the birth or, in default, the country (in its current borders, if the information is available) in which the birth took place.

Young age dependency ratio is the ratio of the persons aged 0-14 years old (1st variant) or 0-19 years old (2nd variant) or 0-19 years old (3rd variant) or 0-24 years old (4th variant) divided by the number of persons conventionally considered of working age (respectively aged 15-64 (1st variant) or 20-59 years old (2nd variant) or 20-64 years old (3rd variant) or 25-64 (4th variant)).

Old age dependency ratio is the number of persons of an age when they are conventionally considered economically inactive (aged 65 years and over (1st variant) or 60 years and over (2nd variant) or aged 65 years and over (3rd variant) or aged 65 years and over (4th variant)) to the number of persons conventionally considered of working age (respectively aged 15-64 (1st variant) or 20-59 years old (2nd variant) or 20-64 years old (3rd variant) or 25-64 (4th variant)).

The total age dependency ratio is the sum of the young and old age dependency ratios. 

Median age of population

The age that divides a population into two numerically equal groups, meaning half of the people are younger than median age and half are older.

Open-ended age class concept (Y_OPEN code) is a solution for presenting different open-ended age classes for data on population that are reported by the countries.

The open-ended age classes for data on population are the following: 85 and over (+), 90+, 95+, 99+, 100+ with the exceptions:

  • Bulgaria: 80+ for the years 1994, 1995 and 1996
  • Cyprus: 80+ for the years 1990, 1991 and 1992
  • Turkey: 75+ for the years 2009, 2010 and 2011

Open-ended age class contains all the people aged more than the last single age for which a country can report. For example, if a country can provide data on its population by single year of age up to 94 years old, the ''open ended age class'' contains population 95 years old and over.

Statistical unit used is ''person'' as indicated in the online database or deductible from the title of tables.

Statistical population is total population as defined in 3.4. Statistical concepts and definitions.

The population statistics are disseminated by single country, by region and by aggregates of countries, as follows:

a) The Member States of the European Union and their regional structure as defined in the Nomenclature of territorial units for statistics.

b) The EU candidate countries and their agreed Statistical Regions following the same rules as the Nomenclature of territorial units for statistics.

c) The EU potential candidate countries and their agreed Statistical Regions following the same rules as the Nomenclature of territorial units for statistics.

d) The EFTA countries and their agreed Statistical Regions following the same rules as the Nomenclature of territorial units for statistics.

e) Other countries: Andorra, Armenia, Azerbaijan, Belarus, Monaco, the Russian Federation, San Marino and the United Kingdom.

f) The geographical aggregates European Union and Euro Area, on which the dissemination covers at least the current and the previous version of their composition, the European Economic Area (EEA) and the European Free Trade Association (EFTA).

For details on geographical changes over time see the notes by country under 15.2 Comparability over time.

National refers to the territory of a Member State within the meaning of Regulation (EC) No 1059/2003 applicable at the reference time.

Regional refers to NUTS level 1, NUTS level 2 or NUTS level 3 as defined in the Regulation (EC) No 1059/2003 and available according to the classification in force at the reference time; where this term is used in connection with countries that are not members of the European Union, "regional" means the Statistical Regions at level 1, 2 or 3, as agreed between those countries and the Commission (Eurostat), at the reference time.

Statistics from the UK are available only until the withdrawal of the UK from the EU.

Data referring to population on 31 December of the reference year are transmitted by the Member States to Eurostat under the Regulation (EU) No 1260/2013 on European demographic statistics. The data are conventionally published by Eurostat as on 1 January of the following year (reference year + 1).

Not available.

Population figures are disseminated in integer numbers and as shares of various age groups in total population (see dataset on population structure indicators).

Based on the national detailed figures on population and other demographic events transmitted by the National Statistical Institutes, Eurostat derives/calculates demographic variables and geographical aggregates by applying common calculation method.

Geographical aggregation

For population data expressed in number, the geographical aggregation is done by arithmetical sum, when there are no missing values among the components of the respective geographical aggregate. Otherwise, they are not calculated. For certain indicators like the average population, the EU value may not coincide with the sum of individual countries due to rounding.

For population structure statistics the geographical aggregates are calculated by applying the same method applied to an individual country. The input for calculation is the aggregated data described above. Therefore, for statistics like ''median age'' of EU is not the average of median age for individual countries. Instead, it is computed as median age across all Member States, meaning that 50% of the total EU population are younger and 50% of the total EU population are older than the median age.

Population data are collected by Eurostat from National Statistical Institutes.

Population statistics are revised on a continuous base according to the most recent data released and transmitted to Eurostat by the National Statistical Institutes. The geographical aggregates and the demographic indicators are accordingly revised.

Dissemination is made in line with the 8.1 Release calendar and with 17.1 Data revision-policy.

For timeliness of data release see 8.1 Release calendar.

The recommended definition of the "population" for the statistics on population reported under Article 3 of the Regulation 1260/2013 and under Article 3 of the Regulation 862/2007 is the "usually resident population" meaning all the persons having their usual residence in a Member State at the reference time. Where the circumstances described above cannot be established, "usual residence" can be taken to mean the place of legal or registered residence.

The reported reference populations based on which population statistics are transmitted by the national statistical institutes to Eurostat:

1. Usually Resident Population([1]): BE, BG, CZ[4], CY, DE, EE, EL, ES, FR, HR, HU, IE, IT, LT, LV, MT, PL, PT, RO, SI, SK[5], UK, AL, RS, GE, AM

2. Legal Residence Population ([2]): CH, LI, FI, TR

3. Registered Residence Population([3]): AT, CZ, DE, DK, ES, IS, LU, NL, NO, SE

 

[1] 'Usually Resident Population' as stated in Article 2 of Regulation 1260/2013.

[2] 'Legal Residence Population' is composed of those persons who are entitled to be settled in the country at the reference date, either by holding the national citizenship or by other authorization issued by national authorities.

[3] 'Registered Residence Population' is composed of those persons who are listed on one or more registers owned by national authorities at the reference date. Each registered person shall be counted only once.

[4]  for non-nationals.

[5]  permanent residence.

Note: The information above is based on statistics and metadata on population reported by the countries, reflecting the latest updates. Some countries place themselves in two categories, explanation can be found in the national metadata files linked above.

Comparability over time could be disturbed by breaks in data series. The breaks in population series due to methodological, data processing changes or revisions in population counts reported by the countries are documented in Eurostat’s database with the flag b (break in time series).

The population data for the year 2021 and after take into account the results of the latest population census (held in 2021-2022). Following Eurostat’s recommendations to ensure consistency of statistics over time, several Member States (Bulgaria, Ireland, Spain, Croatia, Italy, Cyprus, Lithuania, Hungary, Malta, Poland, Portugal) have revised their population time series between the reference years of the population and housing censuses held in 2011 and 2021. While this work was spread over time, revisions were transmitted and released in 2024 (for more information about data revision per country, see also 17. Data revision). While the processing of population revisons is ongoing, it may happen that EU aggregates are not fully syncronised with the corresponding sum of countries.

Over time there have been geographical changes for certain countries, and changes in the methodology for producing population figures, as follows:

  • FX stands for Metropolitan France, including Corsica, excluding the overseas departments (DOM).
  • FR stands for the whole France, including the overseas departments (DOM). Data on Saint Barthelemey are excluded starting with 1 Januray 2012. Data on Mayotte are included starting with the statistics on vital events for the reference year 2014 and with the statistics on population on 1 Januray 2015.
  • The European geographical aggregates (EU, EA and EEA) include FX until 1997 and FR from 1998 on. This change is indicated by a flag b (break in time series) in the EU statistics for 1998.
  • The time series for Germany (DE_TOT) refer to the Federal Republic within its frontiers after 3 October 1990.
  • Starting with 1 Januray 1975, data for Cyprus (CY) refer to the government-controlled area.
  • Up to 1 Januray 2000, population data for Malta (MT) refer to the Maltese population only while, starting with 2001, figures include also foreign residents. This is indicated by a flag b in the figures for 2001.
  • Starting with 1 Januray 2010, the statistics on the permanent resident population of Switzerland (CH) includes all persons in the asylum process who have been residing in Switzerland since 12 months or more. The change appears in Eurostat population figures starting with population reported for 1 Januray 2011.
  • Starting with 1 Januray 2010, Poland (PL) revised the methodology used to estimate the usually resident population. This is indicated by a flag b in the figures for 2010.
  • Starting with 1 Januray 2011, Belgium (BE) population figures at national level refer to all registered persons including asylum seekers.
  • Starting with 1 Januray 2012, the reported Estonian (EE) population includes the migration component, whereas this was not included before.
  • Data for Georgia (GE) refer to the government-controlled area.
  • Data for Moldova (MD) refer to the government-controlled area.
  • Data for Ukraine (UA) exclude the illegally annexed Autonomous Republic of Crimea and the City of Sevastopol.