Tjörn is a municipality in southwest Sweden, in the county of Västra Götaland. The municipality covers an area of 167.3 km². Of the total population of 14733, 7543 are male, and 7190 are female. The population density of the community is 88 inhabitants per km².
... household size is 3.42 and the average family size is 3.67.
In the town the population is spread out with 30.3% under the age of 18, 8.1% from 18 to 24, 29.9% from 25 ...