Assis is a city and a municipality in the southwestern part of the state of São Paulo in Brazil. The population is 101,409 in an area of 460.61 km2. The town was founded on July 5, 1905, and became a municipality in 1917, when it was separated from Platina. It is the largest city of its microregion, and the 2nd of its mesoregion, and is 434 km away from the capital, São Paulo.