How is the age structure measured?

We rank by the share of permanent residents aged 65 and over from the BFS STATPOP register. The full table also shows every municipality’s share, so the youngest municipalities are visible as well.

← Canton Solothurn overview

Ranking · Data 2025 · Source: BFS

The municipalities with the highest share of residents 65+ in canton Solothurn (2025)

National ranking →

Kammersrohr has the highest share of residents aged 65 and over in canton Solothurn: 37.5% (2025). It is followed by Balm bei Günsberg (32.4%) and Rodersdorf (31%). Source: BFS, STATPOP 2025.

Ranking

BFS · STATPOP · 2025

Rank	Municipality	Residents 65+	Residents
1	Kammersrohr	37.5%	32
2	Balm bei Günsberg	32.4%	213
3	Rodersdorf	31%	1'398
4	Bärschwil	29.9%	806
5	Hochwald	29.3%	1'278
6	Kleinlützel	29.1%	1'190
7	Rüttenen	27.8%	1'498
8	Langendorf	27.1%	3'983
9	Nuglar-St. Pantaleon	26.8%	1'580
10	Biezwil	26.7%	345
11	Feldbrunnen-St. Niklaus	26.6%	1'068
12	Lohn-Ammannsegg	26.4%	2'940
13	Grindel	26.4%	508
14	Beinwil	26.2%	248
15	Metzerlen-Mariastein	25.9%	970
16	Himmelried	25.9%	974
17	Günsberg	25.7%	1'169
18	Welschenrohr-Gänsbrunnen	25.6%	1'199
19	Aeschi	25.6%	1'342
20	Nunningen	25.6%	1'948
21	Oberdorf	25.5%	1'806
22	Aedermannsdorf	25.4%	607
23	Bettlach	25.3%	4'935
24	Erschwil	25.2%	996
25	Hubersdorf	25%	727
26	Kriegstetten	24.9%	1'456
27	Bellach	24.9%	5'632
28	Dornach	24.5%	6'898
29	Lommiswil	24.5%	1'615
30	Buchegg	24.2%	2'979
31	Obergösgen	24.1%	2'553
32	Seewen	23.9%	1'088
33	Riedholz	23.7%	2'319
34	Gempen	23.5%	919
35	Witterswil	23.5%	1'475
36	Lostorf	23.5%	4'113
37	Deitingen	23.5%	2'409
38	Drei Höfe	23.5%	727
39	Winznau	23.4%	2'061
40	Stüsslingen	23.2%	1'265
41	Lüterkofen-Ichertswil	23.1%	923
42	Hofstetten-Flüh	23.1%	3'410
43	Wisen	23.1%	451
44	Breitenbach	23.1%	4'440
45	Herbetswil	23%	617
46	Mümliswil-Ramiswil	23%	2'472
47	Recherswil	23%	2'260
48	Gunzgen	22.7%	1'783
49	Meltingen	22.6%	623
50	Luterbach	22.4%	3'756
51	Obergerlafingen	22.4%	1'232
52	Matzendorf	22.1%	1'439
53	Grenchen	22.1%	18'973
54	Walterswil	22.1%	768
55	Fehren	22.1%	619
56	Wolfwil	22%	2'473
57	Messen	22%	1'506
58	Solothurn	21.9%	16'830
59	Laupersdorf	21.8%	1'916
60	Däniken	21.8%	3'108
61	Bättwil	21.7%	1'185
62	Gretzenbach	21.7%	2'825
63	Fulenbach	21.6%	1'841
64	Biberist	21.5%	9'531
65	Rickenbach	21.2%	1'208
66	Kestenholz	21.1%	1'888
67	Selzach	21.1%	3'750
68	Dulliken	21.1%	5'489
69	Subingen	21%	3'311
70	Lüsslingen-Nennigkofen	20.9%	1'131
71	Flumenthal	20.9%	1'023
72	Kienberg	20.7%	526
73	Niedergösgen	20.6%	4'297
74	Erlinsbach	20.6%	3'761
75	Derendingen	20.6%	7'219
76	Hüniken	20.6%	160
77	Schnottwil	20.5%	1'159
78	Büsserach	20.5%	2'473
79	Zullwil	20.5%	704
80	Hauenstein-Ifenthal	20.4%	348
81	Balsthal	20.3%	6'622
82	Kappel	20.2%	3'591
83	Schönenwerd	20.2%	5'437
84	Bolken	20%	579
85	Horriwil	20%	940
86	Starrkirch-Wil	19.9%	2'020
87	Büren	19.5%	1'060
88	Hägendorf	19.4%	5'343
89	Eppenberg-Wöschnau	19.3%	336
90	Wangen bei Olten	19.2%	5'598
91	Olten	19%	19'265
92	Holderbank	18.9%	779
93	Etziken	18.9%	1'093
94	Zuchwil	18.7%	9'622
95	Egerkingen	18.5%	4'365
96	Neuendorf	18.5%	2'412
97	Trimbach	18.3%	6'928
98	Niederbuchsiten	18%	1'369
99	Gerlafingen	18%	5'859
100	Unterramsern	17.8%	230
101	Härkingen	17.2%	1'763
102	Oensingen	17%	6'766
103	Oberbuchsiten	16.6%	2'382
104	Boningen	15.7%	816

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

How we measure this

BFS · STATPOP

Share of permanent residents aged 65 and over, per municipality, from the BFS STATPOP register (2025). The inverse reading — the youngest municipalities — is at the bottom of the table.

Frequently asked questions

Which municipality in canton Solothurn has the oldest population?: Kammersrohr has the highest share of residents 65+ in canton Solothurn: 37.5% as of 2025.
How is the age structure measured?: We rank by the share of permanent residents aged 65 and over from the BFS STATPOP register. The full table also shows every municipality’s share, so the youngest municipalities are visible as well.