Oberhelfenschwil
| Oberhelfenschwil | |
|---|---|
| Location of Oberhelfenschwil | |
| Coordinates: 47°21′N 9°6′E / 47.350°N 9.100°E | |
| Country | Switzerland | 
| Canton | St. Gallen | 
| District | Toggenburg | 
| Government | |
| • Mayor | Toni Hässig | 
| Area | |
|  • Total | 12.68 km2 (4.90 sq mi) | 
| Elevation | 805 m (2,641 ft) | 
| Population  (31 December 2018) | |
|  • Total | 1,261 | 
| • Density | 99/km2 (260/sq mi) | 
| Time zone | UTC+01:00 (Central European Time) | 
| • Summer (DST) | UTC+02:00 (Central European Summer Time) | 
| Postal code(s) | 9621 | 
| SFOS number | 3375 | 
| ISO 3166 code | CH-SG | 
| Surrounded by | Brunnadern, Bütschwil, Ganterschwil, Lichtensteig, Mogelsberg, Wattwil | 
| Website | www SFSO statistics | 
Oberhelfenschwil is a former municipality in the Wahlkreis (constituency) of Toggenburg in the canton of St. Gallen in Switzerland. On 1 January 2023 the former municipalities of Hemberg and Oberhelfenschwil merged into the new municipality of Neckertal.