| Name | Mariehamn |
| Office head of government | |
| Mayor | |
| Image |  |
| Area (m²) | 20,750,000 |
| Date founded | 1861 |
| Elevation (m) | 21 |
| Country | Finland |
| Administrative division | Åland Islands |
| Continent | Europe |
| Latitude (°) | 60.0999984741 |
| Waterbody | |
| Longitude (°) | 19.9333324432 |
| Website | http://www.mariehamn.ax/ |
| Population (people) | 11,677 (31/12/2017) |
| Demonym |