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| Fossoy | |
|---|---|
|   The church of Fossoy | |
| Coordinates: 49°02′57″N3°29′00″E / 49.0492°N 3.4833°E | |
| Country | France | 
| Region | Hauts-de-France | 
| Department | Aisne | 
| Arrondissement | Château-Thierry | 
| Canton | Château-Thierry | 
| Intercommunality | CA Région de Château-Thierry | 
| Government | |
| • Mayor (2020–2026) | Hervé Leduc [1] | 
| Area 1 | 7.18 km2 (2.77 sq mi) | 
| Population  (2021) [2]  | 513 | 
| • Density | 71/km2 (190/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code |  02328 /02650 | 
| Elevation | 61–234 m (200–768 ft) (avg. 100 m or 330 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Fossoy (French pronunciation: [foswa] ) is a commune in the Aisne department in Hauts-de-France in northern France.
| Year | Pop. | ±% | 
|---|---|---|
| 1962 | 293 | — | 
| 1968 | 370 | +26.3% | 
| 1975 | 463 | +25.1% | 
| 1982 | 517 | +11.7% | 
| 1990 | 621 | +20.1% | 
| 1999 | 620 | −0.2% | 
| 2008 | 588 | −5.2% | 
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