In brief
Main language: Irish. Glottolog classifies it in the Indo-European family.
Official figures from other countries
Figures from different countries do not add up: censuses define belonging differently (self-identification, citizenship, mother tongue, ancestry). The type is shown on each figure.
Ireland · 2022
3,893,056
Category as printed: «White Irish»ethnicity / nationality
[1] Central Statistics Office (Ireland)
United States · 2023
30,467,248
Category as printed: «Irish»ancestry (self-reported)
[2] U.S. Census Bureau
Languages and their lineage
Irish
- Indo-Europeanindo1319
- Classical Indo-Europeanclas1257
- Celticcelt1248
- Nuclear Celticnucl1715
- Core Celtictgbc1234
- Insular Celticinsu1254
- Goidelicgoid1240
- Modern Goidelicmode1265
- Irishiris1253
English
- Indo-Europeanindo1319
- Classical Indo-Europeanclas1257
- Germanicgerm1287
- Northwest Germanicnort3152
- West Germanicwest2793
- North Sea Germanicnort3175
- Anglo-Frisianangl1264
- Anglicangl1265
- Later Angliclate1254
- Middle-Modern Englishmerc1242
- Macro-Englishmacr1271
- Englishstan1293
People-to-language links: Wikidata (properties P103 and P2936), checked against ISO 639-3 codes. Language classification: Glottolog 5.3.
Sources
- Central Statistics Office (Ireland). Census of Population 2022 Profile 5 - Diversity, Migration, Ethnicity, Irish Travellers & Religion: Ethnic Group and Background. https://www.cso.ie/en/releasesandpublications/ep/p-cpp5/censusofpopulation2022profile5-div…
- U.S. Census Bureau. ACS 2023 1-year, Table B04006 (variable B04006_049E, label Estimate!!Total:!!Irish). https://data.census.gov/api/access/data/table?id=ACSDT1Y2023.B04006&g=010XX00US
- Hammarström H., Forkel R., Haspelmath M., Bank S. (2026). Glottolog 5.3. Max Planck Institute for Evolutionary Anthropology. glottolog.org (CC BY 4.0)