| Grassau, Bavaria   | |
|---|---|
|   Aerial view | |
| Location of Grassau, Bavaria   within Traunstein   district  | |
| Coordinates: 47°46′44″N12°27′00″E / 47.77889°N 12.45000°E | |
| Country | Germany | 
| State | Bavaria | 
| Admin. region | Oberbayern | 
| District | Traunstein | 
| Government | |
| • Mayor (2020–26) | Stefan Kattari [1] (SPD) | 
| Area | |
|  • Total | 35.76 km2 (13.81 sq mi) | 
| Elevation | 538 m (1,765 ft) | 
| Population  (2023-12-31) [2]  | |
|  • Total | 7,285 | 
| • Density | 200/km2 (530/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| Postal codes | 83224 | 
| Dialling codes | 08641 | 
| Vehicle registration | TS | 
| Website | www.grassau.de | 
Grassau is a market town in the district of Traunstein in Bavaria in Germany. It is located south of lake Chiemsee in the valley of the Tiroler Ache.