As of 2022, there were approximately **** million people in the Republic of Ireland who identified as being White Irish, with a further ******* who had any other white background. Asian or Asian Irish was the third-largest ethnic group in this year, at over ******.

In 2025, there were 435,500 people aged between 40 and 44 in the Republic of Ireland, the most common age group among those provided in this year.

In 2025, the population of the Republic of Ireland was approximately 5.46 million, with approximately 1.57 million people living in County Dublin, the region with the highest population.

This dataset provides Census 2021 estimates that classify households in Northern Ireland by the diversity in ethnic group of household members in different relationships. The estimates are as at census day, 21 March 2021.

The census collected information on the usually resident population of Northern Ireland on census day (21 March 2021). Initial contact letters or questionnaire packs were delivered to every household and communal establishment, and residents were asked to complete online or return the questionnaire with information as correct on census day. Special arrangements were made to enumerate special groups such as students, members of the Travellers Community, HM Forces personnel etc. The Census Coverage Survey (an independent doorstep survey) followed between 12 May and 29 June 2021 and was used to adjust the census counts for under-enumeration.

Ireland IE: Population: Total data was reported at 4,813,608.000 Person in 2017. This records an increase from the previous number of 4,755,335.000 Person for 2016. Ireland IE: Population: Total data is updated yearly, averaging 3,536,158.500 Person from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 4,813,608.000 Person in 2017 and a record low of 2,824,400.000 Person in 1961. Ireland IE: Population: Total data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Ireland – Table IE.World Bank: Population and Urbanization Statistics. Total population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship. The values shown are midyear estimates.; ; (1) United Nations Population Division. World Population Prospects: 2017 Revision. (2) Census reports and other statistical publications from national statistical offices, (3) Eurostat: Demographic Statistics, (4) United Nations Statistical Division. Population and Vital Statistics Reprot (various years), (5) U.S. Census Bureau: International Database, and (6) Secretariat of the Pacific Community: Statistics and Demography Programme.; Sum; Relevance to gender indicator: disaggregating the population composition by gender will help a country in projecting its demand for social services on a gender basis.

Ireland - Foreign-born population was 1211883.00 in December of 2024, according to the EUROSTAT. Trading Economics provides the current actual value, an historical data chart and related indicators for Ireland - Foreign-born population - last updated from the EUROSTAT on December of 2025. Historically, Ireland - Foreign-born population reached a record high of 1211883.00 in December of 2024 and a record low of 730542.00 in December of 2010.

In 2022, the average age of mothers in the Republic of Ireland at maternity was 33.2 years, compared with 28.8 in 1977.

Usually resident population by ethnic or cultural background by Local Authorities. (Census 2022 Theme 2 Table 2 )Census 2022 table 2.2 is the population usually resident in Ireland by ethnic or cultural background. Details include population by ethnicity or cultural background. Census 2022 theme 2 is Migration, Ethnicity, Religion and Foreign Languages. The country is divided into 31 administrative counties/cities. Outside Dublin, there are 23 administrative counties and four cities: Cork, Limerick, Waterford and Galway. There are four local authority areas in Dublin: Dublin City and the three administrative counties of Dún Laoghaire-Rathdown, Fingal and South Dublin. The Local Government Reform Act 2014 Section 9 provided for the amalgamation of the city and county councils in Limerick, Waterford, and North Tipperary and South Tipperary County Councils.Coordinate reference system: Irish Transverse Mercator (EPSG 2157). These boundaries are based on 20m generalised boundaries sourced from Tailte Éireann Open Data Portal. This dataset is provided by Tailte Éireann, Administrative Counties 2019

Ireland IE: Population: Growth data was reported at 1.218 % in 2017. This records an increase from the previous number of 1.129 % for 2016. Ireland IE: Population: Growth data is updated yearly, averaging 0.813 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 2.891 % in 2007 and a record low of -0.428 % in 1988. Ireland IE: Population: Growth data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Ireland – Table IE.World Bank.WDI: Population and Urbanization Statistics. Annual population growth rate for year t is the exponential rate of growth of midyear population from year t-1 to t, expressed as a percentage . Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship.; ; Derived from total population. Population source: (1) United Nations Population Division. World Population Prospects: 2017 Revision, (2) Census reports and other statistical publications from national statistical offices, (3) Eurostat: Demographic Statistics, (4) United Nations Statistical Division. Population and Vital Statistics Reprot (various years), (5) U.S. Census Bureau: International Database, and (6) Secretariat of the Pacific Community: Statistics and Demography Programme.; Weighted average;

National and subnational mid-year population estimates for the UK and its constituent countries by administrative area, age and sex (including components of population change, median age and population density).

This feature layer was created using Census 2016 data produced by the Central Statistics Office (CSO) and Municipal Districts boundary data (generalised to 50m) produced by Tailte Éireann. The layer represents Census 2016 theme 2.2, the population usually resident in Ireland by ethnic or cultural background. Attributes include population breakdown by ethnicity or cultural background (e.g. Asian or Asian Irish, White Irish). Census 2016 theme 2 represents Migration, Ethnicity and Religion. The Census is carried out every five years by the CSO to determine an account of every person in Ireland. The results provide information on a range of themes, such as, population, housing and education. The data were sourced from the CSO. The Municipal District Boundary dataset generalised to 50m has been generated from the Tailte Éireann National Statutory Boundary dataset.

Ireland IE: Birth Rate: Crude: per 1000 People data was reported at 13.500 Ratio in 2016. This records a decrease from the previous number of 14.100 Ratio for 2015. Ireland IE: Birth Rate: Crude: per 1000 People data is updated yearly, averaging 16.700 Ratio from Dec 1960 (Median) to 2016, with 57 observations. The data reached an all-time high of 22.600 Ratio in 1972 and a record low of 13.400 Ratio in 1994. Ireland IE: Birth Rate: Crude: per 1000 People data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Ireland – Table IE.World Bank.WDI: Population and Urbanization Statistics. Crude birth rate indicates the number of live births occurring during the year, per 1,000 population estimated at midyear. Subtracting the crude death rate from the crude birth rate provides the rate of natural increase, which is equal to the rate of population change in the absence of migration.; ; (1) United Nations Population Division. World Population Prospects: 2017 Revision. (2) Census reports and other statistical publications from national statistical offices, (3) Eurostat: Demographic Statistics, (4) United Nations Statistical Division. Population and Vital Statistics Reprot (various years), (5) U.S. Census Bureau: International Database, and (6) Secretariat of the Pacific Community: Statistics and Demography Programme.; Weighted average;

This feature layer was created using Census 2016 data produced by the Central Statistics Office (CSO) and NUTS 3 boundary data (generalised to 100m) produced by Ordnance Survey Ireland (OSi). The layer represents Census 2016 theme 2.3, the population usually resident in Ireland by usual residence 1 year before Census Day. Attributes include population breakdown by usual residence (e.g. same address, outside Ireland). Census 2016 theme 2 represents Migration, Ethnicity and Religion. The Census is carried out every five years by the CSO to determine an account of every person in Ireland. The results provide information on a range of themes, such as, population, housing and education. The data were sourced from the CSO. NUTS 3 boundaries generalised to 100m. The Nomenclature of Territorial Units for Statistics (NUTS) were drawn up by Eurostat in order to define territorial units for the production of regional statistics across the European Union. The NUTS classification has been used in EU legislation since 1988, but it was only in 2003 that the EU Member States, the European Parliament and the Commission established the NUTS regions within a legal framework (Regulation (EC) No 1059/2003). The Irish NUTS 3 regions comprise the eight Regional Authorities established under the Local Government Act, 1991 (Regional Authorities) (Establishment) Order, 1993 which came into operation on January 1st 1994. The NUTS 2 regions, which were proposed by Government and agreed to by Eurostat in 1999, are groupings of the Regional Authorities.

Ireland Estimated Population: Female: Age 25 to 44 data was reported at 714.700 Person th in 2017. This records a decrease from the previous number of 716.100 Person th for 2016. Ireland Estimated Population: Female: Age 25 to 44 data is updated yearly, averaging 436.650 Person th from Apr 1950 (Median) to 2017, with 68 observations. The data reached an all-time high of 730.800 Person th in 2011 and a record low of 307.100 Person th in 1969. Ireland Estimated Population: Female: Age 25 to 44 data remains active status in CEIC and is reported by Central Statistics Office of Ireland. The data is categorized under Global Database’s Ireland – Table IE.G001: Population: by Age.

This dataset provides Census 2021 estimates that classify usual residents in Northern Ireland by ethnic group, and by broad age bands. The estimates are as at census day, 21 March 2021.

The census collected information on the usually resident population of Northern Ireland on census day (21 March 2021). Initial contact letters or questionnaire packs were delivered to every household and communal establishment, and residents were asked to complete online or return the questionnaire with information as correct on census day. Special arrangements were made to enumerate special groups such as students, members of the Travellers Community, HM Forces personnel etc. The Census Coverage Survey (an independent doorstep survey) followed between 12 May and 29 June 2021 and was used to adjust the census counts for under-enumeration.

The ethnic groups reported are those for which there was a tick-box on the census questionnaire, plus any ethnic group with more counts than the smallest tick-box.

'Age' is age at last birthday.

Quality assurance report can be found here

In 2025, the population of the Republic of Ireland was approximately **** million, compared with **** million in 2024.

About this dataset

Context

This list ranks the 51 cities in the Monmouth County, NJ by Irish population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Irish Population: This column displays the rank of city in the Monmouth County, NJ by their Irish population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Irish Population: The Irish population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Irish. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total Monmouth County Irish Population: This tells us how much of the entire Monmouth County, NJ Irish population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

This data collection provides information for native-born Americans, Irish Americans, and German Americans living in Detroit, Michigan, between 1850 and 1880. Demographic variables provide information on age, sex, occupation, marital status, marriage patterns, ethnic background, place of birth, and spouse's and parents' place of birth. Additional information is provided on family size, number of children of adults, number of individuals in the house beyond the immediate family, total number of individuals in the nuclear family, position of individuals within the family, number of children eligible to be in school, activities of school-age children, adult male skill level, literacy level, length of time the family had been in the United States, ownership and value of real estate, constitutional and legal status, and physical condition.