Breton
573K people can hold a conversation in Breton across 1 country; official in 0.
Data as of 2 Nov 2026 · ISO 639-3 bre · Glottolog bret1244 · Indo-European · CLDR 49, Glottolog 5.3, States sheet
Where Breton is spoken
Share of each country's people who can hold a conversation in it.
Loading map…
Small territories are not drawn at this scale.
Countries
Share of the population and people who can hold a conversation in it, by country.
How this is measured
Most figures are CLDR's estimates of speakers. CLDR lists only each country's larger languages, so where it has no figure a national census or official survey fills in, and the Figure column says which and what it counts. A home-language figure is a floor: more people can speak the language than use it at home.
Family
Where it sits in the Glottolog tree, root to language.
- Indo-European
- Classical Indo-European
- Celtic
- Nuclear Celtic
- Core Celtic
- Insular Celtic
- Brythonic
- Southwestern Brythonic
- Middle-Modern Southwestern Brythonic
- Bretonic
- Breton
Indo-European: 216 languages, 5.95B speakers.
Where these numbers come from
- Unicode CLDR territoryInfo (release 49) (Unicode License v3). Country-level language shares, official status and Tier 3 reach (populationPercent is total speakers, first plus second language).
- Glottolog 5.3 (CC BY 4.0). Language names, ISO 639-3 codes, families.
- Database of International and Intranational Linguistic distances (DICL v2), USITC (CC BY 4.0). Country-pair common spoken language and linguistic proximity (neighbours, linked-world score, pairs pages).
- States (ISO 3166-2) sheet, MetroAreas workbook (Citizen of Nowhere, own compilation). States, populations and the four language labels per state.
- Natural Earth 1:110m Admin 0 Countries (nvkelso/natural-earth-vector) (Public domain). World outline for the language maps (world-110m.geojson, properties reduced to iso3 and name).
- Country layer of this site (countries.json workbook population, World Bank iso2 and iso3, OWID country-population) (Citizen of Nowhere, own compilation; World Bank CC BY 4.0; OWID CC BY). Country population, iso2 and /countries slug joined onto languages, countries and families (speakers = share x population).
Definitions are on the Method page.