Which municipality in canton Basel-City is shrinking fastest?

Bettingen: 0.6 % population in 2025 — the steepest decline of any municipality in canton Basel-City. Source: FSO (BEVNAT).

Why do some municipalities shrink?

The year’s population change comes from births, deaths and in/out-migration (FSO BEVNAT). When deaths and departures outweigh births and arrivals, the population falls. The percentage makes small and large municipalities comparable.

Ranking · Data 2025 · Source: BFS

The fastest-shrinking municipalities in canton Basel-City

National ranking →

Bettingen is shrinking fastest in canton Basel-City: its population fell 0.6 % in 2025. Next come Riehen (1.1 %) and Basel (1.4 %). The basis is the year’s population change. Source: FSO (BEVNAT).

Ranking

BFS · 2025

Rank	Municipality	Population change	Residents
1	Bettingen	0.6%	1'286
2	Riehen	1.1%	22'774
3	Basel	1.4%	180'097

BEVNAT (Statistik der natürlichen Bevölkerungsbewegung) 2025 · Federal Statistical Office (FSO), retrieved 11.09.2026

How we measure this

BFS

Change in the permanent resident population during calendar year 2025, in percent of the population on 1 January, from the FSO statistics on natural population movement (BEVNAT) and migration. This ranking shows the same measure from the other end: the steepest declines first. A negative value means shrinkage.

Frequently asked questions

Which municipality in canton Basel-City is shrinking fastest?: Bettingen: 0.6 % population in 2025 — the steepest decline of any municipality in canton Basel-City. Source: FSO (BEVNAT).
Why do some municipalities shrink?: The year’s population change comes from births, deaths and in/out-migration (FSO BEVNAT). When deaths and departures outweigh births and arrivals, the population falls. The percentage makes small and large municipalities comparable.