Castelo Branco District is located in Central Portugal. Its capital is Castelo Branco, which is now also its most populous city, overtaking Covilhã, which was once the largest city, in the late 2010s. It has an area of 6675 km2 (4th largest in Portugal), and a population of 225,916 inhabitants. It borders Spain.

Municipalities

The district is composed of 11 municipalities:

Summary of votes and seats won in national elections since 1976

!rowspan=2|Parties!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S!!%!!S !colspan=2 | 1976 !colspan=2 | 1979 !colspan=2 | 1980 !colspan=2 | 1983 !colspan=2 | 1985 !colspan=2 | 1987 !colspan=2 | 1991 !colspan=2 | 1995 !colspan=2 | 1999 !colspan=2 | 2002 !colspan=2 | 2005 !colspan=2 | 2009 !colspan=2 | 2011 !colspan=2 | 2015 !colspan=2 | 2019 !colspan=2 | 2022 ! Total seats || colspan=2|7 || colspan=10|6 || colspan=10|5 || colspan=10|4 ! colspan=33|Source: Comissão Nacional de Eleições