How is the share of foreign residents measured?

It is the share of the permanent resident population without Swiss citizenship, from the BFS STATPOP register. Citizenship is not the same as place of birth or migration background.

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Ranking · Data 2025 · Source: BFS

Municipalities with the highest share of foreign residents in canton Basel-City (2025)

National ranking →

Basel has the highest share of foreign residents in canton Basel-City: 40.5% (2025). It is followed by Riehen (29.9%) and Bettingen (25.5%). Source: Federal Statistical Office (BFS), STATPOP 2025.

Ranking

BFS · STATPOP · 2025

Rank	Municipality	Foreign residents	Residents
1	Basel	40.5%	180'097
2	Riehen	29.9%	22'774
3	Bettingen	25.5%	1'286

STATPOP 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026

How we measure this

BFS · STATPOP

Share of permanent residents without Swiss citizenship, per municipality, from the BFS STATPOP register (2025). Citizenship, not place of birth. Small municipalities can show extreme values — the residents column provides the context.

Frequently asked questions

Which municipality in canton Basel-City has the highest share of foreign residents?: Basel has the highest share of foreign residents in canton Basel-City: 40.5% as of 2025.
How is the share of foreign residents measured?: It is the share of the permanent resident population without Swiss citizenship, from the BFS STATPOP register. Citizenship is not the same as place of birth or migration background.