Ranking · Data 2025 · Source: BFS
The fastest-shrinking municipalities in canton Solothurn
National ranking →Balm bei Günsberg is shrinking fastest in canton Solothurn: its population fell -7.4 % in 2025. Next come Beinwil (-5.3 %) and Günsberg (-3 %). The basis is the year’s population change. Source: FSO (BEVNAT).
Ranking
BFS · 2025| Rank | Municipality | Population change | Residents |
|---|---|---|---|
| 1 | Balm bei Günsberg | -7.4% | 213 |
| 2 | Beinwil | -5.3% | 248 |
| 3 | Günsberg | -3% | 1'169 |
| 4 | Flumenthal | -2.8% | 1'023 |
| 5 | Obergerlafingen | -2.7% | 1'232 |
| 6 | Rüttenen | -2.2% | 1'498 |
| 7 | Grindel | -2.1% | 508 |
| 8 | Metzerlen-Mariastein | -1.8% | 970 |
| 9 | Nunningen | -1.8% | 1'948 |
| 10 | Witterswil | -1.7% | 1'475 |
| 11 | Gempen | -1.6% | 919 |
| 12 | Büren | -1.6% | 1'060 |
| 13 | Schnottwil | -1.5% | 1'159 |
| 14 | Meltingen | -1.3% | 623 |
| 15 | Eppenberg-Wöschnau | -1.2% | 336 |
| 16 | Lüsslingen-Nennigkofen | -1.1% | 1'131 |
| 17 | Bettlach | -1% | 4'935 |
| 18 | Härkingen | -1% | 1'763 |
| 19 | Oberbuchsiten | -1% | 2'382 |
| 20 | Welschenrohr-Gänsbrunnen | -0.8% | 1'199 |
| 21 | Oensingen | -0.8% | 6'766 |
| 22 | Rodersdorf | -0.7% | 1'398 |
| 23 | Drei Höfe | -0.7% | 727 |
| 24 | Oberdorf | -0.7% | 1'806 |
| 25 | Hüniken | -0.6% | 160 |
| 26 | Bättwil | -0.6% | 1'185 |
| 27 | Kleinlützel | -0.6% | 1'190 |
| 28 | Walterswil | -0.5% | 768 |
| 29 | Lostorf | -0.4% | 4'113 |
| 30 | Mümliswil-Ramiswil | -0.4% | 2'472 |
| 31 | Horriwil | -0.3% | 940 |
| 32 | Hochwald | -0.3% | 1'278 |
| 33 | Feldbrunnen-St. Niklaus | -0.3% | 1'068 |
| 34 | Rickenbach | -0.3% | 1'208 |
| 35 | Lohn-Ammannsegg | -0.2% | 2'940 |
| 36 | Lommiswil | -0.2% | 1'615 |
| 37 | Biberist | -0.2% | 9'531 |
| 38 | Solothurn | -0.1% | 16'830 |
| 39 | Dornach | -0% | 6'898 |
| 40 | Holderbank | 0% | 779 |
| 41 | Biezwil | 0% | 345 |
| 42 | Seewen | 0% | 1'088 |
| 43 | Kienberg | 0% | 526 |
| 44 | Gerlafingen | 0% | 5'859 |
| 45 | Kammersrohr | 0% | 32 |
| 46 | Zuchwil | 0.1% | 9'622 |
| 47 | Kestenholz | 0.2% | 1'888 |
| 48 | Hofstetten-Flüh | 0.2% | 3'410 |
| 49 | Bolken | 0.4% | 579 |
| 50 | Subingen | 0.4% | 3'311 |
| 51 | Boningen | 0.4% | 816 |
| 52 | Winznau | 0.4% | 2'061 |
| 53 | Riedholz | 0.4% | 2'319 |
| 54 | Zullwil | 0.4% | 704 |
| 55 | Stüsslingen | 0.5% | 1'265 |
| 56 | Buchegg | 0.5% | 2'979 |
| 57 | Messen | 0.5% | 1'506 |
| 58 | Neuendorf | 0.7% | 2'412 |
| 59 | Erlinsbach | 0.7% | 3'761 |
| 60 | Kriegstetten | 0.7% | 1'456 |
| 61 | Dulliken | 0.7% | 5'489 |
| 62 | Kappel | 0.8% | 3'591 |
| 63 | Hägendorf | 0.8% | 5'343 |
| 64 | Luterbach | 0.9% | 3'756 |
| 65 | Büsserach | 0.9% | 2'473 |
| 66 | Balsthal | 1% | 6'622 |
| 67 | Niedergösgen | 1% | 4'297 |
| 68 | Himmelried | 1% | 974 |
| 69 | Aeschi | 1.1% | 1'342 |
| 70 | Trimbach | 1.1% | 6'928 |
| 71 | Fulenbach | 1.1% | 1'841 |
| 72 | Hubersdorf | 1.1% | 727 |
| 73 | Olten | 1.1% | 19'265 |
| 74 | Däniken | 1.1% | 3'108 |
| 75 | Wangen bei Olten | 1.2% | 5'598 |
| 76 | Derendingen | 1.2% | 7'219 |
| 77 | Wolfwil | 1.2% | 2'473 |
| 78 | Egerkingen | 1.3% | 4'365 |
| 79 | Bärschwil | 1.3% | 806 |
| 80 | Gretzenbach | 1.3% | 2'825 |
| 81 | Bellach | 1.4% | 5'632 |
| 82 | Herbetswil | 1.5% | 617 |
| 83 | Selzach | 1.6% | 3'750 |
| 84 | Breitenbach | 1.7% | 4'440 |
| 85 | Nuglar-St. Pantaleon | 1.7% | 1'580 |
| 86 | Schönenwerd | 1.9% | 5'437 |
| 87 | Laupersdorf | 1.9% | 1'916 |
| 88 | Grenchen | 2% | 18'973 |
| 89 | Starrkirch-Wil | 2% | 2'020 |
| 90 | Hauenstein-Ifenthal | 2.1% | 348 |
| 91 | Niederbuchsiten | 2.1% | 1'369 |
| 92 | Matzendorf | 2.1% | 1'439 |
| 93 | Unterramsern | 2.2% | 230 |
| 94 | Etziken | 2.3% | 1'093 |
| 95 | Lüterkofen-Ichertswil | 2.3% | 923 |
| 96 | Aedermannsdorf | 2.4% | 607 |
| 97 | Obergösgen | 2.5% | 2'553 |
| 98 | Langendorf | 2.6% | 3'983 |
| 99 | Recherswil | 2.6% | 2'260 |
| 100 | Wisen | 3% | 451 |
| 101 | Erschwil | 3% | 996 |
| 102 | Deitingen | 3% | 2'409 |
| 103 | Fehren | 3.2% | 619 |
| 104 | Gunzgen | 5.1% | 1'783 |
BEVNAT (Statistik der natürlichen Bevölkerungsbewegung) 2025 · Federal Statistical Office (FSO), retrieved 11.09.2026
How we measure this
BFSChange 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 Solothurn is shrinking fastest?
- Balm bei Günsberg: -7.4 % population in 2025 — the steepest decline of any municipality in canton Solothurn. 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.