Centralia is a borough in Columbia County, Pennsylvania, United States. Its population has dwindled from over 1,000 residents in 1981 to 12 in 2005, and 9 in 2007, as a result of a 45-year-old mine fire burning beneath the borough. Centralia is now the least-populous municipality in Pennsylvania, with four fewer residents than the borough of S.N.P.J.. Centralia apartments for rent comparison page shows most up to date rent information on Centralia apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.