Sigtuna Municipality () is a municipality in Stockholm County, Sweden. Its seat is located in the town of Märsta, approximately north of the Swedish capital, Stockholm. The municipality is a part of Metropolitan Stockholm.
The municipality consists of several former local government units and was formed in 1971. It got its name from the small, but very old, City of Sigtuna, but the seat was placed in the larger modern town of Märsta. The three towns of the municipality are Märsta (pop. 23,000), Sigtuna (pop. 8,000) and Rosersberg (pop. 1,400), of which Märsta is the municipal seat and Sigtuna with its old and important history is a popular tourist destination.
Sigtuna Municipality is also home to Stockholm Arlanda Airport, the main airport serving Stockholm, and the largest airport in Sweden.
Demography
Population development
2022 population by district
This is a demographic table based on Sigtuna Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.
There were 50,180 residents, including 33,030 Swedish citizens of voting age. Scandinavian Airlines previously had its head office on the airport property.
International relations
Twin towns – Sister cities
The municipality is twinned with:
- Sønderborg Municipality in Denmark
- Rakvere in Estonia
- Raisio in Finland
- Porsgrunn in Norway