Katrineholm Municipality is a municipality in Södermanland County in southeast Sweden. Its seat is located in the city of Katrineholm.
The present municipality was created in 1971, when the City of Katrineholm was amalgamated with surrounding rural municipalities.
The thirty-first Swedish Prime Minister Göran Persson, while originally from the neighboring municipality of Vingåker, was once the municipal chairman of Katrineholm.
Wikipedia https://en.wikipedia.org/wiki/Katrineholm_Municipality
Coordinates 59°0'48" N 16°16'0.578" E