Grethem | |
|---|---|
 Coat of arms | |
Location of Grethem within Heidekreis district  | |
  Grethem  Grethem | |
| Coordinates: 52°43′N 09°35′E / 52.717°N 9.583°E | |
| Country | Germany |
| State | Lower Saxony |
| District | Heidekreis |
| Municipal assoc. | Ahlden |
| Government | |
| • Mayor | Udo Schönberg |
| Area | |
| • Total | 16.35 km2 (6.31 sq mi) |
| Elevation | 24 m (79 ft) |
| Population (2022-12-31)[1] | |
| • Total | 668 |
| • Density | 41/km2 (110/sq mi) |
| Time zone | UTC+01:00 (CET) |
| • Summer (DST) | UTC+02:00 (CEST) |
| Postal codes | 29690 |
| Dialling codes | 05164 |
| Vehicle registration | FAL, SFA |
| Website | www.grethem.de |
Grethem is a municipality in the district of Heidekreis, in Lower Saxony, Germany.