East hammers around

Östhammar is a locality and the seat of Östhammar Municipality, Uppsala County, Sweden with 4,534 inhabitants in 2010. Today Östhammar Municipality is a part of Uppsala County, but the area has historically been a part of Stockholm County.

Östhammar Municipality (Östhammars kommun) is a municipality in Uppsala County in east central Sweden. Its seat is located in the city of Östhammar.The present municipality was created during the local government reform in the late sixties and early seventies. Already in 1967 the City of Öregrund joined the City of Östhammar in a common municipality.