Administrative divisions of Catalonia represented on the map: 947 municipalities, 41 counties and 1 singular territorial entity.

Municipal limit: Municipal delimitation base of the Cartographic and Geological Institute of Catalonia (ICGC). Municipal map approved by the Territorial Delimitation Commission of Catalonia (Decree 244/2007) and subsequent updates.

County limit and Aran: Division approved by the Generalitat of Catalonia: Law 22/1987 of December 16^th (DOGC no. 929, 18/12/1987), Law 5/1988 of March 28^th (DOGC no. 992, 16 /05/1988), Law 3/1990 of January 8^th (DOGC no. 1243, 17/01/1990), Law 1/2015 of February 5^th (DOGC no. 6810A, 13/02/2015, of approval of the Law of the special regime of Aran), Law 4/2015 of April 23^rd (DOGC no. 6862, 30/04/2015, creating the county of Moianès) and Law 7/2023 of May 10^th (DOGC no. 8913, 11/05/2023, creating the county of Lluçanès)

Official name of municipalities, municipal capitals, counties and singular territorial entities: Official nomenclature of major toponymy of Catalonia (2009) and subsequent updates.

Population of municipal capitals: Institut d'Estadística de Catalunya. Nomenclature of population entities in Catalonia.

Reference geodetic system: ETRS 89 (GRS 80 ellipsoid). Map projection UTM 31 north.