|County||Västra Götaland County|
|• Total||845.94 km2 (326.62 sq mi)|
|• Land||167.36 km2 (64.62 sq mi)|
|• Water||678.58 km2 (262.00 sq mi)|
|Area as of 1 January 2014.|
|Population (31 December 2017)|
|• Density||19/km2 (48/sq mi)|
|Time zone||UTC+1 (CET)|
|• Summer (DST)||UTC+2 (CEST)|
|ISO 3166 code||SE|
Tjörn is the sixth largest Swedish island. It is located in the province of Bohuslän.
The former municipal entities on the island and adjacent islets were united to form Tjörn Municipality in 1952.
For centuries the local economy was dominated by fishing and boat building. The largest employers are still the shipping company TransAtlantic (formerly known as B&N) and the shipyards Djupviks varv and Rönnängs varv.
Tjörn is connected in the east to the town of Stenungsund on the mainland by the Tjörn bridge, and in the north to the island of Orust by the Skåpesund bridge. The municipal capital, Skärhamn, is also the municipal capital. Other communities, many of which are the fishing communities, include Rönnäng, Klädesholmen and Kyrkesund. The island of Mjörn, north-east of Tjörn, has beautiful scenery and large shell banks.
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During the summer, the population swells from 10,000 to 20,000 to 30,000 as vacationers arrive for yachting and swimming. Skärhamn has an ample guest harbour to accommodate yachters travelling along the Swedish west coast. The town of Skärhamn is the location of the Nordic Watercolour Museum (Akvarellmuseet).
- "Statistiska centralbyrån, Kommunarealer den 1 januari 2014" (Microsoft Excel) (in Swedish). Statistics Sweden. Retrieved 2014-04-18.
- "Folkmängd i riket, län och kommuner 31 december 2017" (in Swedish). Statistics Sweden. February 21, 2018. Retrieved February 21, 2018.