← Canton St. Gallen overview
Ranking · Data 2025 · Source: BFS
The largest municipalities by area in canton St. Gallen (2025)
National ranking →Mels is the largest municipality by area in canton St. Gallen: 139.1 km² (2025). Next come Pfäfers (128.5 km²) and Nesslau (92.7 km²). Source: swisstopo.
Ranking
swisstopo · 2025| Rank | Municipality | Area | Residents |
|---|---|---|---|
| 1 | Mels | 139.1 km² | 9'581 |
| 2 | Pfäfers | 128.5 km² | 1'647 |
| 3 | Nesslau | 92.7 km² | 3'937 |
| 4 | Wildhaus-Alt St. Johann | 87.5 km² | 2'614 |
| 5 | Neckertal | 81.8 km² | 6'446 |
| 6 | Flums | 75.2 km² | 5'458 |
| 7 | Quarten | 73.2 km² | 3'118 |
| 8 | Eschenbach | 54.9 km² | 10'401 |
| 9 | Grabs | 54.7 km² | 7'535 |
| 10 | Wattwil | 51.2 km² | 9'262 |
| 11 | Mosnang | 50.5 km² | 2'936 |
| 12 | Walenstadt | 48.8 km² | 6'083 |
| 13 | Amden | 47.6 km² | 1'896 |
| 14 | Ebnat-Kappel | 43.6 km² | 5'353 |
| 15 | Kirchberg | 42.5 km² | 9'879 |
| 16 | Wartau | 41.8 km² | 5'617 |
| 17 | Sennwald | 41.6 km² | 6'428 |
| 18 | Schänis | 39.9 km² | 4'213 |
| 19 | Altstätten | 39.5 km² | 12'788 |
| 20 | St. Gallen | 39.4 km² | 79'487 |
| 21 | Oberriet | 34.6 km² | 9'417 |
| 22 | Gommiswald | 33.6 km² | 5'838 |
| 23 | Vilters-Wangs | 32.7 km² | 5'168 |
| 24 | Rapperswil-Jona | 31.4 km² | 28'836 |
| 25 | Waldkirch | 31.3 km² | 3'581 |
| 26 | Sevelen | 30.3 km² | 5'405 |
| 27 | Gossau | 27.5 km² | 18'943 |
| 28 | Bad Ragaz | 25.4 km² | 6'836 |
| 29 | Gams | 22.3 km² | 3'736 |
| 30 | Bütschwil-Ganterschwil | 21.8 km² | 5'385 |
| 31 | Wil | 20.8 km² | 25'444 |
| 32 | Kaltbrunn | 18.6 km² | 5'128 |
| 33 | Oberbüren | 17.7 km² | 4'762 |
| 34 | Benken | 16.5 km² | 3'119 |
| 35 | Niederhelfenschwil | 16.4 km² | 3'309 |
| 36 | Buchs | 16 km² | 14'287 |
| 37 | Niederbüren | 15.8 km² | 1'571 |
| 38 | Degersheim | 14.5 km² | 4'209 |
| 39 | Uzwil | 14.5 km² | 14'676 |
| 40 | Lütisburg | 14.1 km² | 1'647 |
| 41 | Oberuzwil | 14.1 km² | 6'864 |
| 42 | Gaiserwald | 12.6 km² | 8'828 |
| 43 | Wittenbach | 12.2 km² | 10'157 |
| 44 | Flawil | 11.5 km² | 10'672 |
| 45 | Diepoldsau | 11.3 km² | 6'933 |
| 46 | Jonschwil | 11 km² | 3'979 |
| 47 | Muolen | 10.3 km² | 1'251 |
| 48 | Mörschwil | 9.8 km² | 3'702 |
| 49 | Thal | 9.7 km² | 7'217 |
| 50 | Sargans | 9.5 km² | 6'670 |
| 51 | Rüthi | 9.3 km² | 2'667 |
| 52 | Häggenschwil | 9.1 km² | 1'432 |
| 53 | Zuzwil | 9 km² | 4'994 |
| 54 | Eggersriet | 8.9 km² | 2'370 |
| 55 | Uznach | 7.5 km² | 7'114 |
| 56 | Rorschacherberg | 7.1 km² | 7'741 |
| 57 | Untereggen | 7.1 km² | 1'035 |
| 58 | St. Margrethen | 6.9 km² | 6'731 |
| 59 | Balgach | 6.5 km² | 5'229 |
| 60 | Andwil | 6.3 km² | 2'117 |
| 61 | Schmerikon | 6 km² | 4'168 |
| 62 | Weesen | 5.8 km² | 1'895 |
| 63 | Berneck | 5.6 km² | 4'026 |
| 64 | Eichberg | 5.4 km² | 1'614 |
| 65 | Goldach | 4.7 km² | 9'872 |
| 66 | Au | 4.7 km² | 8'771 |
| 67 | Steinach | 4.5 km² | 3'579 |
| 68 | Marbach | 4.4 km² | 2'147 |
| 69 | Rebstein | 4.4 km² | 5'084 |
| 70 | Widnau | 4.2 km² | 10'485 |
| 71 | Berg | 3.8 km² | 1'021 |
| 72 | Lichtensteig | 2.8 km² | 2'157 |
| 73 | Rheineck | 2.2 km² | 3'566 |
| 74 | Tübach | 2 km² | 1'587 |
| 75 | Rorschach | 1.8 km² | 10'389 |
swisstopo, retrieved 24.08.2026
How we measure this
swisstopoMunicipal area in square kilometres from swisstopo's official boundaries (swissBOUNDARIES3D), as of 2025. It covers the total area including forest, water and unproductive land.
Frequently asked questions
- Which municipality in canton St. Gallen is the largest by area?
- Mels is the largest municipality by area in canton St. Gallen, at 139.1 km² (2025).
- Is water area included in the municipal area?
- Yes. The figure is swisstopo's official total area including lakes, forest and unproductive land — not just the built-up zone.