Fonsomme
| Fonsomme | |
|---|---|
| Source of the Somme | |
| Location of Fonsomme | |
| Coordinates: 49°54′11″N 3°24′01″E / 49.9031°N 3.4003°E | |
| Country | France | 
| Region | Hauts-de-France | 
| Department | Aisne | 
| Arrondissement | Saint-Quentin | 
| Canton | Saint-Quentin-2 | 
| Intercommunality | CA Saint-Quentinois | 
| Government | |
| • Mayor (2020–2026) | Colette Noël | 
| Area 1 | 9.6 km2 (3.7 sq mi) | 
| Population  (2022) | 517 | 
| • Density | 54/km2 (140/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 02319 /02110 | 
| Elevation | 82–131 m (269–430 ft) (avg. 85 m or 279 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Fonsomme (French pronunciation: [fɔ̃sɔm]; before 2011: Fonsommes) is a commune in the Aisne department in Hauts-de-France in northern France.