Katrineholm is a municipality in central Sweden, in the county of Södermanland. The municipality covers an area of 1018.5 km². Of the total population of 32370, 15895 are male, and 16475 are female. The population density of the community is 32 inhabitants per km².
... The average household size is 2.30 and the average family size is 2.79.
In the town the population is spread out with 18.5% under the age of 18, 4.4% from 18 to 24, 20.6% ...