| Name | Nyköping |
| Office head of government | |
| Mayor | |
| Image |  |
| Area (m²) | 13,430,000 |
| Date founded | 1187 |
| Elevation (m) | 20 |
| Country | Sweden |
| Administrative division | Södermanland County |
| Continent | Europe |
| Latitude (°) | 58.7530555725 |
| Waterbody | |
| Longitude (°) | 17.0086116791 |
| Website | https://www.nykoping.se/ |
| Population (people) | 33,546 (31/12/2019) |
| Demonym |