The canton of Solothurn, also called Soleure in French, is a canton in the northwest of Switzerland, and its capital is the city of Solothurn. Its territory was assembled mainly from lands the former town acquired in the Middle Ages, so the canton is irregular in shape and includes two exclaves along the French border, cut off from the rest of the canton by Basel-Landschaft. It borders Jura and Bern to the west and south, Aargau to the east and Basel-Landschaft to the north, and the Aare river drains its mostly flat land. Solothurn joined the military alliance of the former Swiss confederation in 1481, kept its Catholic religion after the Reformation and was reconstituted as a canton in 1803. It covers about 791 square kilometres and has 104 municipalities.
Facts
Area (sq km) Admission Year Connections
Has Capital
Source Statoids: Cantons of Switzerland (Statoids)
Sources
1. City Population: Switzerland: Administrative Division (citypopulation.de)
City PopulationCantons and Districts table, 2025 estimate columnQuote, Cantons and Districts table, 2025 estimate column
Solothurn Canton 218,102 231,746 244,341 255,284 277,462 291,460
View the Source 2. Statoids: Cantons of Switzerland (Statoids)
StatoidsPrimary subdivisions table, area column
Solothurn CH.SO SZ18 CH023 255,284 791 305 g Solothurn
Has Capital: Solothurn, Primary subdivisions table, capital column
Solothurn CH.SO SZ18 CH023 255,284 791 305 g Solothurn
View the Source 3. Canton of Solothurn (Wikipedia)
History, accession
In 1481, the canton became a member of the military alliance of the former Swiss confederation.
Part Of: Switzerland, Lead
is a canton of Switzerland
In Group: Cantons (World), Lead, canton status
is a canton of Switzerland
View the SourceSwitzerland (Wikipedia)
Wikimedia FoundationOn Continent: Europe, Switzerland article, leadQuote, On Continent: Europe, Switzerland article, lead
Switzerland, officially the Swiss Confederation, is a landlocked country located at the intersection of Central, Western, and Southern Europe.
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