About the data — sources and methodology

IrelandInsights.ie is built entirely on official Irish government and public data sources. No data is invented, interpolated, or inferred. Every number on the map links directly to a primary source.

Primary data sources

• Census 2022 — CSO Ireland — Electoral division and small area statistics for population, housing tenure, education, employment, commuting, age, and household composition. 3,420 EDs and 19,000+ small areas. Published by the Central Statistics Office under the Creative Commons Attribution 4.0 licence.
• Property Price Register — PSRA — Residential property transactions since 2010. Used for price trend analysis. Published by the Property Services Regulatory Authority.
• Rent data — RTB — Rental market data by area. Published by the Residential Tenancies Board.
• Election results — Electoral Commission Ireland — 2020 and 2024 general election results by constituency. First-preference votes and seat allocations.
• Deprivation Index — Pobal — HP Deprivation Index 2022, derived from Census 2022 indicators of disadvantage at small area level.
• Transport — Transport for Ireland / NTA — GTFS bus and rail data for route mapping and stop locations.
• Weather — Met Éireann / Open-Meteo — Current conditions and rainfall data by location.
• Building Energy Ratings — CSO / SEAI — County-level BER certificate counts and band distributions (A1–G) from CSO PxStat table EBA02 (Domestic Building Energy Rating). Data reflects the certified stock only — approximately 5% of Irish homes have been assessed, predominantly on sale or rental. Source: cso.ie/ber
• Residential retrofits — SEAI — County-level counts of SEAI-supported residential property upgrades from the SEAI National Retrofit Plan Full Year Report. Covers the Better Energy Homes scheme, Warmer Homes scheme, Solar PV scheme, and National Home Energy Upgrade Scheme (One Stop Shops). Retrofit rates are expressed per 1,000 households using Census 2022 household counts as the denominator. Source: seai.ie/retrofit
• Boundaries — OSi / CSO / Electoral Commission — Electoral division, county, constituency, and small area boundary geometries.

Geography definitions

• Electoral Division (ED) — The primary unit of analysis. Ireland has 3,420 EDs, each covering 60–2,000 households. This is the finest geographic level at which Census 2022 data is published for most topics.
• Small Area (SA) — Sub-ED units, approximately 60–120 households. Used for deprivation scoring and selected census topics.
• County — Aggregated from ED-level data. County figures on this site are computed from the underlying ED data, not from CSO county summaries, to ensure consistency.
• Constituency — Dáil constituencies as defined by the Electoral Commission for the 2024 general election. 43 constituencies returning 174 TDs.

Update frequency

• Census data — Updated when a new census is published. Current data is Census 2022 (published 2023–2024). Next Irish census is due 2027.
• Property prices — Updated regularly from the Property Price Register and RTB datasets.
• Election results — Updated after each general election. Current data covers November 2024 and February 2020 elections.
• BER data — Updated when CSO publishes new quarterly BER figures. IrelandInsights refreshes from CSO EBA02 at server startup and caches the result. Current data covers certificates issued to end of the displayed year.
• Retrofit data — Updated annually when SEAI publishes the National Retrofit Plan Full Year Report (typically Q1 of the following year). Current data is from the 2024 Full Year Report.
• Weather and transport — Live data with caching. Weather refreshes every few minutes; transport data follows GTFS schedule publications.

What this site is not

• This is not a CSO product. IrelandInsights.ie is an independent map built on CSO open data.
• Data is not provided for individual people — only aggregate statistics at geographic level.
• Electoral division boundaries and populations change between censuses. Comparisons between 2016 and 2022 may reflect boundary changes, not just population change.