Karns City is a borough that is located in Butler County, Pennsylvania, United States. The population was 209 at the time of the 2010 census.Brown, Robert C., ed., et. al. History of Butler County, Pennsylvania, pp. 551–556. Chicago, Illinois: R. C. Brown Publishers, 1895.
Karns City is a borough that is located in Butler County, Pennsylvania, United States. The population was 209 at the time of the 2010 census.Brown, Robert C., ed., et. al. History of Butler County, Pennsylvania, pp. 551–556. Chicago, Illinois: R. C. Brown Publishers, 1895.