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.

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

The island of Ireland is split into 32 different counties, and from 1800 until 1921 the whole island was a part of the United Kingdome of Great Britain and Ireland (although Britain had been a controlling presence on the island for considerably longer than this). In 1921 the island was split into two separate states, where the six counties with the highest population of Protestants formed part of the United Kingdom of Great Britain and Northern Ireland, and the other 26 counties became the Independent Republic of Ireland. From 1821 until 1841, the population of these 26 counties was growing steadily, until the Great Famine from 1845 to 1849 swept across the island, particularly devastating the west and south.

The famine was caused by a Europe-wide potato blight that contributed to mass starvation and death throughout the continent, although it's impact on Ireland was much harsher than anywhere else. The potato blight affected Ireland so severely as the majority of potatoes in Ireland were of a single variety which allowed the disease to spread much faster than in other countries. People in the west and south of Ireland were particularly dependent on potatoes, and these areas were affected more heavily than the north and west, where flax and cereals were the staple. As the potato blight spread, the population became increasingly reliant on dairy and grain products, however a lot of these resources were relocated by the British military to combat food shortages in Britain. Due to disproportional dependency on potatoes, and mismanagement by the British government, over one million people died and a further one million emigrated. The Great Famine lasted from just 1845 to 1849, but it's legacy caused almost a century of population decline, and to this day, the population of Ireland has never exceeded it's pre-famine levels.

The population decline continued well into the twentieth century, during which time the Republic of Ireland achieved independence from the British Empire. After centuries of fighting and rebellion against British rule, Irish nationalists finally gained some independence from Britain in 1921, establishing an Irish Republic in the 26 counties. There was a lot of conflict in Ireland in the early 1900s, through the War of Independence and Irish Civil War, however the population of the Republic began growing again from the 1960s onwards as the quality of life improved and the emigration rate declined. The population was at it's lowest from 1926 to 1971, where it remained at just under three million, but in the following fifty years the population has grown by over two million people.

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

Population shrinkage has gained attention from academics and policymakers in recent years, due to the long-term implications the phenomenon has for public service delivery and the viability of urban and rural communities. We visualise the socio-temporal evolution of population shrinkage and growth, utilising a spatially rectified dataset containing population data from seven Census of Population covering the 1986–2016 period in the Republic of Ireland. Spatial changes in population distribution are visualised in a map that classifies small administrative units using a spatial typology distinguishing between those experiencing population growth or shrinkage, across the 30-year period. The temporal dimensions of these developments are considered in a sequence of inset maps that apply the same typology to identify the intercensal changes. Overall, the map facilitates the visual communication of long-run population trends, the identification of areas experiencing limited or no growth, and indicates the relative consistency of these trends over time.

From 1821 until 2011, the male and female populations of the 26 counties of the modern-day Republic of Ireland grew at a relatively similar rate, however some fluctuations did occur. During this time, the entire island of Ireland was a part of the United Kingdom of Great Britain and Ireland, after both islands were united by the Acts of Union in 1800. This graph shows the populations of the 26 counties that would later form the Republic of Ireland in 1921, and does not include the six counties that became known as Northern Ireland.

As we can see, both populations follow a relatively similar trend throughout their respective histories. In the first three entries, women outnumber men by 70,000 to 120,000, although these figures do not include military personnel which would narrow this margin. Both populations fall at a similar rate during and after the famine, however the male population does fall slightly faster, possibly due to an increased rate of emigration among males. Another point where both populations differ is in the early twentieth century, where the female population declines in a relatively smooth curve, although the male populations peak in the census data before and after both world wars. From 1956 onwards both populations follow a very similar trend, and grow at the same rate. The difference in population sizes never exceeds 30,000 people, until the final entry in 2011 where the population of men is 2.27 million and the population of women is 2.31 million.

Population usually Resident and Present in the State and Who Were Living Outside Ireland (Republic) One Year Ago

Combined and standardised demographics covering Northern Ireland and the Republic of Ireland.

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 ******.

This file contains original variables from Theme 1 Population from Census 2006 & 2011 and a series of additional variables produced by AIRO such as percentage rates, ratios etc. The file includes data on Total Population, Gender, Age Groups and Dependency Ratios for the 3,406 Electoral Divisions in the Republic of Ireland.

Population Usually Resident and Present in the State and Who Were Living Outside Ireland (Republic) One Year Ago (Number) by Usual Residence One Year Previously, CensusYear, Sex and Nationality

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Original provider: National Parks and Wildlife Service, Dept. of Environment, Heritage and Local Government

Dataset credits: National Parks and Wildlife Service, Dept. of Environment, Heritage and Local Government
Michelle Cronin, Coastal & Marine Resources Centre, University College Cork

Abstract: The status of Ireland's harbor seal Phoca vitulina vitulina population is poorly understood. The most recent national population estimate dates back to the breeding season in 1978 and did not cover the entire coastline. Reliable up-to-date information on the abundance and distribution of harbor seals in Ireland is necessary to assess the conservation status of the species and for the effective identification, management and monitoring of special areas of conservation required for harbor seals under the European Union Habitats Directive. To provide comprehensive current information on Ireland's harbor seal population, a geographically extensive survey was conducted along the coastline of the Republic of Ireland during the species' annual moult in August 2003. This complemented a similar survey of Northern Ireland, which was conducted in 2002. Using thermal imaging technology, haul-out groups of harbor seals and grey seals Halichoerus grypus were identified from the air, aerial-counts were obtained and compared with simultaneous ground-count data from selected sites. Harbor seal distribution recorded during the 2003 moult season was concentrated in the south-west, west and north-west of the country. This national survey yielded a minimum population estimate for the Republic of Ireland of 2905 harbor seals, delivering an effective baseline for current and future population research.

Population Usually Resident and Present in the State and Who Were Living Outside Ireland (Republic) One Year Ago by Composition of Private Household by Nationality, CensusYear and Statistic

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This file contains original variables from Theme 1 Population from Census 2011 and a series of additional variables produced by AIRO such as percentage rates, ratios etc. The file includes data on Total Population, Gender, Age Groups and Dependency Ratios for the 18,488 Small Areas in the Republic of Ireland.

Recorded Crime Offences from 2003 Q1 to 2022 Q2

Dataset scraped by Zaur Gouliev (zaurgouliev@gmail.com) from CSO/Record Crime Statistics

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Introduction

The Central Statistics Office (CSO) publishes statistics on Recorded Crime on a quarterly basis. The Recorded Crime statistical release and associated tables provide detail on the number and type of crime incidents recorded by An Garda Síochána.

Recorded Crime statistics are derived from the administrative data records created and maintained by An Garda Síochána on their incident recording system PULSE (Police Using Leading Systems Effectively).

Incidents reported to, or which become known to, An Garda Síochána are recorded as crime incidents if a member of An Garda Síochána determines that, on the balance of probability, a criminal offence defined by law has taken place, and there is no credible evidence to the contrary. Recorded Crime statistics are disseminated using the Irish Crime Classification System (ICCS) and are based on the date recorded as being the date the crime was reported to, or became known to, An Garda Síochána.

Recorded Crime statistics contain only valid crime incidents reported to and recorded by An Garda Síochána. Issues of under-reporting and under-recording of crime are not addressed in this release.

Recorded Crime statistics are subject to revision because the underlying records may be subject to ongoing review by An Garda Síochána on the incident recording system as the Garda investigation into the incident progresses.

Crime Counting Rules (CCR)

An overview for how crimes ought to be recorded by An Garda Síochána is provided in the Crime Counting Rules document. The document, published by AGS, explains the procedures and rationale for whether or not to record a crime incident and what to record. It provides guidance for the classification, reclassification, and invalidation of records and for recording whether a crime incident is detected.

In summary, incidents reported or which become known to An Garda Síochána are recorded as crime incidents if a member of An Garda Síochána determines that, on the balance of probability, a criminal offence defined by law has taken place, and there is no credible evidence to the contrary. A crime incident should be recorded against the Garda sub-district in which the incident took place (or was reported if the location cannot be determined).

If it is subsequently determined that a criminal offence did not take place, the recorded crime incident should be invalidated. Invalidated incidents are not counted in recorded crime statistics.

If a person withdraws a report of a crime, stating that the criminal act did not take place, again the recorded crime incident is invalidated unless there is evidence to suggest that, on the balance of probability, an offence has taken place.

A recorded crime is classified as a particular incident type at the time it is initially recorded on PULSE. If, as part of an investigation, it becomes clear that a different crime incident type should have been used then the record should be reclassified. A reclassification to a homicide offence should occur, for example, if a serious assault has been recorded and the victim later dies as a direct consequence of the assault, or if a road traffic offence is determined to have resulted in a fatal road traffic collision.

Reclassification based on the outcome of court proceedings is only required in the case of homicide incidents. For example, a murder offence should be reclassified to manslaughter when a murder charge results in a conviction for manslaughter.

Primary Offence Rule: Where two or more criminal offences are committed in a single episode, it is the primary recorded crime incident which is counted. The primary incident is the incident for which the suspected offender would receive the greatest penalty on conviction. For example if a suspected offender is involved in an incident of dangerous driving causing death and an incident of drug possession, the incident of dangerous driving causing death should be classified as the primary incident. The drug possession incident would not be included in the Recorded Crime Statistics as only primary incidents are counted for statistical purposes. Homicide incidents should always be recorded as the primary incident.

One Offence Counts Per Victim: A separate crime incident should be recorded for each victim of a crime, and each incident is counted for statistical purposes. There are some exceptions to this rule, for example, a single burglary incident should be recorded where property belonging to two or more victims is stolen or damaged during a single burglary.

Continuous Series Involving the Same Victim and Same Offender: A series of fraud or sexual offence incidents involving the same offender and...

Understanding the size and spatial distribution of material stocks is crucial for sustainable resource management and climate change mitigation. This study presents high-resolution maps of buildings and mobility infrastructure stocks for the United Kingdom (UK) and the Republic of Ireland (IRL) at 10 m, combining satellite-based Earth observations, OpenStreetMaps, and material intensities research. Stocks in the UK and IRL amount to 19.8 Gigatons or 279 tons/cap, predominantly aggregate, concrete and bricks, as well as various metals and timber. Building stocks per capita are surprisingly similar across medium to high population density, with only the lowest population densities having substantially larger per capita stocks. Infrastructure stocks per capita decrease with higher population density. Interestingly, for a given building stock within an area, infrastructure stocks are substantially larger in IRL than in the UK. These maps can provide useful insights for sustainable urban planning and advancing a circular economy.

This dataset features a detailed map of material stocks in the United Kingdom and the Republic of Ireland on a 10m grid based on high resolution Earth Observation data (Sentinel-1 + Sentinel-2), crowd-sourced geodata (OSM) and material intensity factors.

Spatial extent
This dataset covers the whole British Isles. Due to processing reasons, the dataset is internally structured into the Island of Ireland, and the Island of Great Britain.

Temporal extent
The map is representative for ca. 2018.

Data format
The data are organized by nations. Within each nation, data are split into 100km x 100km tiles (EQUI7 grid), and mosaics are provided.

Within each tile, images for area, volume, and mass at 10m spatial resolution are provided. Units are m², m³, and t, respectively. Each metric is split into buildings, other, rail and street (note: In the paper, other, rail, and street stocks are subsumed to mobility infrastructure). Each category is further split into subcategories (e.g. building types).

Additionally, a grand total of all stocks is provided at multiple spatial resolutions and units, i.e.

• t at 10m x 10m
• kt at 100m x 100m
• Mt at 1km x 1km
• Gt at 10km x 10km

For each nation, mosaics of all above-described data are provided in GDAL VRT format, which can readily be opened in most Geographic Information Systems. File paths are relative, i.e. DO NOT change the file structure or file naming.

Additionally, the grand total mass per nation is tabulated for each island in mass_grand_total_t_10m2.tif.csv. County code and the ID in this table can be related via zones_name_pop.csv.

Material layers
Note that material-specific layers are not included in this repository because of upload limits. Only the totals are provided (i.e. the sum over all materials).

Further information
For further information, please see the publication.
Visit our website to learn more about our project MAT_STOCKS - Understanding the Role of Material Stock Patterns for the Transformation to a Sustainable Society.

Publication

D. Wiedenhofer, F. Schug, H. Gauch, M. Lanau, M. Drewniok, A. Baumgart, D. Virág, H. Watt, A. Cabrera Serrenho, D. Densley Tingley, H. Haberl, D. Frantz (2024): Mapping material stocks of buildings and mobility infrastructure in the United Kingdom and the Republic of Ireland. Resources, Conservation and Recycling 206, 107630. https://doi.org/10.1016/j.resconrec.2024.107630

Funding
This research was primarly funded by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (MAT_STOCKS, grant agreement No 741950).

Acknowledgments
We thank the European Space Agency and the European Commission for freely and openly sharing Sentinel imagery; Microsoft for Building Footprints; Geofabrik and all contributors for OpenStreetMap.This dataset was partly produced on EODC - we thank Clement Atzberger for supporting the generation of this dataset by sharing disc space on EODC, and Wolfgang Wagner for granting access to preprocessed Sentinel-1 data.

In 2024, the urban population of the Republic of Ireland was approximately 3.48 million, while the rural population was around 1.89 million. Although the urban population of Ireland is currently bigger than the rural population, this was not the case in 1960 when there were approximately 272,450 more people living in rural areas than urban ones.

Chronological summary of public health responses and non-pharmaceutical interventions (NPIs) implemented in the Republic of Ireland in response to COVID-19 Pandemic, March–October 2020 (Note: Due to ongoing national and regional/local changes to public health responses over the course of the study period, Table 1 is not a comprehensive description of all NPIs, but provides a summary of the most significant nationwide NPIs).