| Berthez | |
|---|---|
|   Town hall | |
| Coordinates: 44°29′09″N0°08′03″W / 44.4858°N 0.1342°W | |
| Country | France | 
| Region | Nouvelle-Aquitaine | 
| Department | Gironde | 
| Arrondissement | Langon | 
| Canton | Le Réolais et Les Bastides | 
| Government | |
| • Mayor (2020–2026) | Guy Dubouilh [1] | 
| Area 1 | 6.03 km2 (2.33 sq mi) | 
| Population  (2022) [2]  | 292 | 
| • Density | 48/km2 (130/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code |  33048 /33124 | 
| Elevation | 29–115 m (95–377 ft) (avg. 107 m or 351 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Berthez is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.
| Year | Pop. | ±% | 
|---|---|---|
| 1962 | 120 | — | 
| 1968 | 152 | +26.7% | 
| 1975 | 119 | −21.7% | 
| 1982 | 102 | −14.3% | 
| 1990 | 142 | +39.2% | 
| 1999 | 166 | +16.9% | 
| 2008 | 216 | +30.1% |