Kila is a census-designated place and unincorporated community in Flathead County, Montana, United States. Its population was 392 as of the 2010 census. Kila has a post office with ZIP code 59920, which opened on May 27, 1901. The community is located along U.S. Route 2.This climatic region is typified by large seasonal temperature differences, with warm to hot summers and cold winters. According to the Köppen Climate Classification system, Kila has a humid continental climate, abbreviated "Dfb" on climate maps.