Gunzgen

History

Gunzgen is first mentioned in 1226 as Gunzichon. In 1320 it was mentioned as Gunzkon.

Geography

Gunzgen has an area, , of . Of this area, or 46.2% is used for agricultural purposes, while or 24.6% is forested. Of the rest of the land, or 27.4% is settled (buildings or roads), or 0.8% is either rivers or lakes and or 0.3% is unproductive land. Of the built up area, industrial buildings made up 6.3% of the total area while housing and buildings made up 7.9% and transportation infrastructure made up 7.6%. Power and water infrastructure as well as other special developed areas made up 5.3% of the area Out of the forested land, all of the forested land area is covered with heavy forests. Of the agricultural land, 32.2% is used for growing crops and 11.7% is pastures, while 2.3% is used for orchards or vine crops. Of the water in the municipality, 0.3% is in lakes and 0.5% is in rivers and streams. The municipality is located in the Olten district, in the Mittelgäu along the Dünnern river. The municipal borders changed during the Dünnern River Correction in 1933–43. It consists of the linear village of Gunzgen and the settlement of Allmend which is separated from the main village by the A1 and A2 motorways.

Most-observed species

• European roe deer

  Capreolus capreolus (Linnaeus, 1758) · Mammalia
  13,760
• Meadow Brown

  Maniola jurtina (Linnaeus, 1758) · Insecta
  8,566
• red fox

  Vulpes vulpes (Linnaeus, 1758) · Mammalia
  6,847
• Marbled White

  Melanargia galathea Linnaeus, 1758 · Insecta
  4,144
• Common Blue

  Polyommatus icarus (von Rottemburg, 1775) · Insecta
  3,644
• Annual Fleabane

  Erigeron annuus (L.) Pers. · Magnoliopsida
  3,508
• Dusky Large Blue

  Maculinea nausithous (Bergstrasser, 1779) · Insecta
  3,214
• Indian Balsam

  Impatiens glandulifera Royle · Magnoliopsida
  3,074

Most recent

• M 4.1 — 2025-07-21
  4 km E of Frutigen, Switzerland
• M 3.5 — 2024-06-27
  1 km SSW of Todtmoos, Germany
• M 4.2 — 2024-06-04
  2 km NNW of Unteriberg, Switzerland
• M 4.4 — 2023-03-22
  1 km NW of Pont-de-Roide, France
• M 3.9 — 2022-09-10
  1 km WSW of Zimmersheim, France
• M 4.1 — 2021-12-24
  2 km WSW of Blamont, France