Population
11'982↑0.3%

City · Thurgau
Romanshorn is a municipality in the district of Arbon in the canton of Thurgau, Switzerland, located on the southern shore of Lake Constance.
The rental vacancy rate is 3.07%, 116% above the cantonal average (1.42 %) — a comparatively relaxed market. The municipal tax multiplier (Steuerfuss) is 163%, 12% above the cantonal average (145 %). Median taxable income is CHF 54'500, 12% below the Swiss median (CHF 61'929). Romanshorn has 11'982 residents (2025).
Source: Swiss Federal Statistical Office (BFS).