Administrative divisions of Ireland
Ireland is divided into 34 first-level administrative divisions:
Largest cities in Ireland
| # | City | Population |
|---|---|---|
| 1 | DublinCapital | 1,024,027 |
| 2 | Cork | 224,004 |
| 3 | Limerick | 102,287 |
| 4 | Galway | 85,910 |
| 5 | Tallaght | 81,022 |
| 6 | Waterford | 60,079 |
| 7 | Drogheda | 44,135 |
| 8 | Dundalk | 43,112 |
| 9 | Swords | 40,776 |
| 10 | Navan | 33,886 |
Dublin is the largest city in Ireland with about 1,024,027 people. All 30 largest cities of Ireland →
Terrain, rivers & lakes
Highest terrain in Ireland: ≈ 984 m — read from the global elevation model, so summit heights are approximate. The physical map paints elevation bands from green lowlands to brown highlands.
🌊 Rivers
- Shannon
🏞️ Lakes
- Lough Derg
- Lake
- Lough Ree
- Lough Allen
Ethnic groups in Ireland
Irish 76.6%, Irish travelers 0.6%, other White 9.9%, Asian 3.3%, Black 1.5%, other (includes Arab, Roma, and persons of mixed backgrounds) 2%, unspecified 2.6% (2022 est.)
Regionally, Irish is the most common ethnic group across most of the 34 divisions.
Source: CIA World Factbook (2022 est.) · regional dominance compiled by Glostats from censuses and surveys
Religions in Ireland
Roman Catholic 69.2% (includes lapsed), Protestant 3.7% (Church of Ireland/England/Anglican/Episcopalian 2.5%, other Protestant 1.2%), Orthodox 2%, other Christian 0.9%, Muslim 1.6%, other 1.4%, agnostic/atheist 0.1%, none 14.5%, unspecified 6.7% (2022 est.)
Regionally, Roman Catholic is the most common religious group across most of the 34 divisions.
Source: CIA World Factbook (2022 est.) · regional dominance compiled by Glostats from censuses and surveys
Languages in Ireland
English (official, the language generally used), Irish (Gaelic or Gaeilge) (official, spoken by approximately 37.7% of the population)
Regionally, English is the most common language group across most of the 34 divisions.
Source: CIA World Factbook · regional dominance compiled by Glostats from censuses and surveys
Explore more
Sources: boundaries, cities, rivers and lakes from Natural Earth (public domain, 1:10m); elevation from the AWS Open Data terrain tiles (SRTM/GMTED); ethnic, religious and language shares from the CIA World Factbook; regional dominance compiled by Glostats from national censuses and surveys. Page generated 2026-10-20. More about our data.