|  | This article may be expanded with text translated from the corresponding article in French. (December 2008)Click [show] for important translation instructions. 
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| Francilly-Selency | |
|---|---|
| The town hall and school of Francilly-Selency | |
| Coordinates: 49°51′12″N3°13′28″E / 49.8533°N 3.2244°E Coordinates: 49°51′12″N3°13′28″E / 49.8533°N 3.2244°E | |
| Country | France | 
| Region | Hauts-de-France | 
| Department | Aisne | 
| Arrondissement | Saint-Quentin | 
| Canton | Saint-Quentin-1 | 
| Intercommunality | Pays du Vermandois | 
| Government | |
| • Mayor (2020–2026) | Daniel Denivet [1] | 
| Area 1 | 5.43 km2 (2.10 sq mi) | 
| Population | 505 | 
| • Density | 93/km2 (240/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code |  02330 /02760 | 
| Elevation | 86–128 m (282–420 ft) (avg. 117 m or 384 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Francilly-Selency is a commune in the Aisne department in Hauts-de-France in northern France.
| Year | Pop. | ±% | 
|---|---|---|
| 1962 | 223 | — | 
| 1968 | 229 | +2.7% | 
| 1975 | 343 | +49.8% | 
| 1982 | 426 | +24.2% | 
| 1990 | 419 | −1.6% | 
| 1999 | 435 | +3.8% | 
| 2008 | 461 | +6.0% | 

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