| Södermalm | |
| Settlement Type: | Borough of Stockholm |
| Pushpin Map: | Sweden |
| Pushpin Map Caption: | Location of Södermalm within Sweden |
| Pushpin Mapsize: | 100 |
| Coordinates: | 59.31°N 18.06°W |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Stockholm Municipality |
| Subdivision Type2: | Municipality subdivision |
| Subdivision Name2: | Söderort |
| Government Type: | Municipal assembly |
| Leader Title: | Municipal commissioner |
| Leader Name: | Christoffer Järkeborn (M) |
| Established Title: | Established |
| Established Date: | 2007 |
| Population As Of: | 2014 |
| Population Total: | 126,736 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 111--, 116--, 117--, 118--, 120-- |
| Area Code Type: | Area code |
| Website: | Stockholm.se |
Södermalm is a city district area (often referred to as a borough) in central Stockholm, Sweden. Södermalm borough has a population of around 110,000, making it the most populated borough of Stockholm.[1] The urban development project of Hammarby Sjöstad is located in the Södermalm borough.[2]
Södermalm was created 1 January 2007, through the merging of the boroughs of Maria-Gamla Stan and Katarina-Sofia. It covers the island of Södermalm and some neighboring districts. The two former boroughs made up the eastern and western half of the island of Södermalm. Maria-Gamla Stan was the result of a previous merging between the original borough with the same name, and the former borough of Hornstull, in 1999. Maria-Gamla Stan also included the island districts of Gamla Stan, Långholmen, Reimersholme, Riddarholmen and Årsta holmar; Katarina-Sofia included the district Södra Hammarbyhamnen south of Södermalm. All these districts are now parts of the new Södermalm borough.[3] [4]