| Name | Olsztyn |
| Office head of government | |
| Mayor | |
| Image |  |
| Area (m²) | 88,328,000 |
| Date founded | 31/10/1353 |
| Elevation (m) | 88 |
| Country | Poland |
| Administrative division | Warmian-Masurian |
| Continent | Europe |
| Latitude (°) | 53.7833328247 |
| Waterbody | |
| Longitude (°) | 20.5000000000 |
| Website | http://www.olsztyn.eu/ |
| Population (people) | 173,599 (30/06/2016) |
| Demonym |