Population
10'141↑0.2%
About Therwil
City · Basel-Landschaft
Therwil is a municipality in the district of Arlesheim in the canton of Basel-Country in Switzerland.
Population
10'141
Tax multiplier
52%
Therwil in numbers
Federal data — BFS (STATPOP, STATENT, land use), ESTV, BAKOM, ARE.52%
Bottom 10% in canton
Median taxable income
CHF 59'300↓0.7%
Top quartile in canton
Median net income
CHF 65'650↓0.5%
77%
Cantonal tax multiplier
100%
0.86%↑48.3%
Top quartile in canton
- Agriculture45%
- Settlement30%
- Forest24%
- Other1%
Foreign residents
20.2%↑2.7%
Above average in canton
Median rent
CHF 20/ m²
+14% vs CH
Dwellings
4'884↑1.2%
Jobs (FTE)
2'517↑3.2%
92%
Housing market in Therwil
The rental vacancy rate is 0.86%, 3% above the cantonal average (0.83 %) — a comparatively relaxed market. The municipal tax multiplier (Steuerfuss) is 52%, 9% below the cantonal average (57 %) — tax-favourable. Median taxable income is CHF 72'200, 17% above the Swiss median (CHF 61'929). Therwil has 10'141 residents (2025).
Source: Swiss Federal Statistical Office (BFS).