| Guainville | |
|---|---|
| The church in Guainville | |
| Coordinates: 48°54′56″N1°29′34″E / 48.9156°N 1.4928°E | |
| Country | France | 
| Region | Centre-Val de Loire | 
| Department | Eure-et-Loir | 
| Arrondissement | Dreux | 
| Canton | Anet | 
| Intercommunality | CA Pays de Dreux | 
| Government | |
| • Mayor (2020–2026) | Nathalie Velin [1] | 
| Area 1 | 14.12 km2 (5.45 sq mi) | 
| Population  (2022) [2]  | 684 | 
| • Density | 48/km2 (130/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code |  28187 /28260 | 
| Elevation | 52–145 m (171–476 ft) (avg. 146 m or 479 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Guainville is a commune in the Eure-et-Loir department in northern France.
| Year | Pop. | ±% | 
|---|---|---|
| 1962 | 254 | — | 
| 1968 | 256 | +0.8% | 
| 1975 | 321 | +25.4% | 
| 1982 | 412 | +28.3% | 
| 1990 | 555 | +34.7% | 
| 1999 | 614 | +10.6% | 
| 2008 | 664 | +8.1% |