The Hardangervidda National Park center is located at the lake Møsvatn, just east of Tinn.

The parish of Tind (later spelled "Tinn") was established as a municipality on 1 January 1838 (see formannskapsdistrikt law).

The official blazon is "Argent, five gouttes de larmes, three and two" (Norwegian: I sølv fem blå dråper, 3-2).

The Rjukan Falls, located on the Måna river, allowed construction of Vemork, the largest power station in the world in 1911.

The station has become a museum where one can explore the history of the energy and see exhibits about the industrial development in Norway and in the town of Rjukan.

During World War II, Vemork was the site of the Norwegian heavy water sabotage, when Norwegian saboteurs prevented the Germans from producing nuclear weapons from the heavy water which was produced here.

The municipal council (Kommunestyre) of Tinn is made up of 25 representatives that are elected to four-year terms.

The mayors (Norwegian: ordfører) of Tinn:[34] Tinn borders the municipality of Nore og Uvdal (in Buskerud county) to the north; Rollag and Flesberg (also in Buskerud) to the east; Notodden, Hjartdal, and Seljord to the south, and Vinje to the west.

One landmark in Tinn is the 1,883 metres (6,178 ft) tall mountain Gaustatoppen, which is climbed by 30,000 people each year.