Selfoss known as "the capital of the South".
In 1978 Selfoss got its municipal rights and has the recent years been rapidly growing.The people of Selfoss base their livelihood on small industries, commerce, services rendered to the agricultural surroundings and tourism.
The developing started back in 1891 when the bridge was built across the river Ölfusa. The river runs through the town, and it is a voluminous river because the water comes from both glacial water and from Þingvallarvatn.
I 1944 the bridge collapsed but a new was constructed right away because of its importance for the town.