Oberentfelden

History

Oberentfelden is first mentioned in 965 as Endiveld. In 1306 it was mentioned as Oberen-En[t]velt.

Geography

Oberentfelden has an area, , of . Of this area, 29.4% is used for agricultural purposes, while 42.3% is forested. Of the rest of the land, 28% is settled (buildings or roads) and the remainder (0.3%) is non-productive (rivers or lakes). The municipality is located in the Aarau district in the lower Suhr valley. The villages of Oberentfelden and Unterentfelden, while distinct municipalities, have grown together.

Most-observed species

• Meadow Brown

  Maniola jurtina (Linnaeus, 1758) · Insecta
  11,633
• European roe deer

  Capreolus capreolus (Linnaeus, 1758) · Mammalia
  7,409
• Annual Fleabane

  Erigeron annuus (L.) Pers. · Magnoliopsida
  6,904
• Common Blue

  Polyommatus icarus (von Rottemburg, 1775) · Insecta
  6,194
• Marbled White

  Melanargia galathea Linnaeus, 1758 · Insecta
  5,995
• Small Heath

  Coenonympha pamphilus (Linnaeus, 1758) · Insecta
  4,227
• red fox

  Vulpes vulpes (Linnaeus, 1758) · Mammalia
  4,080
• Indian Balsam

  Impatiens glandulifera Royle · Magnoliopsida
  3,455

Most recent

• M 3.7 — 2026-04-26
  4 km N of Quarten, Switzerland
• 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