Messen

Balm bei Messen was a municipality in the district of Bucheggberg in the canton of Solothurn in Switzerland. On 1 January 2010 the municipalities of Balm bei Messen, Brunnenthal and Oberramsern merged into the municipality of Messen.

Oberramsern was a municipality in the district of Bucheggberg in the canton of Solothurn in Switzerland. On 1 January 2010, the municipalities of Balm bei Messen, Brunnenthal and Oberramsern merged into the municipality of Messen.

Brunnenthal was a municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2010 the municipalities of Balm bei Messen, Brunnenthal and Oberramsern merged into the municipality of Messen.

Lüterswil-Gächliwil is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. It was formed in 1994 from the merger of the two previously independent municipalities of Lüterswil and Gächliwil. On 1 January 2024 the former municipality of Lüterswil-Gächliwil merged into the municipality of Buchegg.

Ruppoldsried is a former municipality in the Seeland administrative district in the canton of Bern in Switzerland. On 1 January 2013 Ruppoldsried merged into Rapperswil.

Scheunen is a former municipality in the Bern-Mittelland administrative district in the canton of Bern in Switzerland. On 1 January 2014 the former municipalities of Scheunen and Münchringen merged into the municipality of Jegenstorf.

Mülchi is a former municipality in the Bern-Mittelland administrative district in the canton of Bern in Switzerland. On 1 January 2014 the former municipalities of Mülchi, Büren zum Hof, Etzelkofen, Grafenried, Limpach, Schalunen and Zauggenried merged into the municipality of Fraubrunnen.

Aetigkofen is a former municipality in the district of Bucheggberg in the canton of Solothurn in Switzerland. On 1 January 2014 the former municipalities of Aetigkofen, Tscheppach, Brügglen, Aetingen, Bibern (SO), Gossliwil, Hessigkofen, Mühledorf (SO), Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.

Bucheggberg District is one of the ten districts of the canton of Solothurn in Switzerland, situated to the southwest of the canton. Together with the Wasseramt District, it forms the Amtei (electoral district) of Wasseramt-Bucheggberg. It has a population of 8,009 (as of 31 December 2020).

Gossliwil is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2014 the former municipalities of Gossliwil, Tscheppach, Brügglen, Aetingen, Aetigkofen, Bibern (SO), Hessigkofen, Mühledorf (SO), Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.

Unterramsern is a municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland.

Etzelkofen is a former municipality in the Bern-Mittelland administrative district in the canton of Bern in Switzerland. On 1 January 2014 the former municipalities of Etzelkofen, Büren zum Hof, Grafenried, Limpach, Mülchi, Schalunen and Zauggenried merged into the municipality of Fraubrunnen.