Salla, known as KuolajΓ€rvi until 1936, is a municipality of Finland, located in Lapland. The municipality has a population of 3,231 (31 December 2025) and covers an area of 5,873.08 square kilometres (2,267.61Β sqΒ mi) of which 142.73Β km2 (55.11Β sqΒ mi) is water. The population density is 0.56 inhabitants per square kilometre (1.5/sqΒ mi).