Gnesta is a municipality in central Sweden, in the county of Södermanland. The municipality covers an area of 460.6 km². Of the total population of 9768, 4894 are male, and 4874 are female. The population density of the community is 21 inhabitants per km².
... 65 years of age or older. The average household size is 2.38 and the average family size is 3.02.
In the town the population is spread out with 22.3% under the age of 18, ...