Population
3'301↑4.2%

City · Aargau
Othmarsingen is a municipality in the district of Lenzburg in the canton of Aargau in Switzerland.
The rental vacancy rate is 0.41%, 66% below the cantonal average (1.19 %) — a tight rental market. The municipal tax multiplier (Steuerfuss) is 104%, roughly the cantonal average (104 %). Median taxable income is CHF 61'350, roughly the Swiss average (CHF 61'929). Othmarsingen has 3'301 residents (2025).
Source: Swiss Federal Statistical Office (BFS).