Homeacre-Lyndora is a census-designated place in Butler County, Pennsylvania, United States. The population was 6,906 at the 2010 census. Lyndora was linked to Butler, Evans City and Pittsburgh in 1908 by the Pittsburgh, Harmony, Butler and New Castle Railway, an interurban trolley line. The line closed on June 15, 1931, and the trolleys were r…Homeacre-Lyndora is a census-designated place in Butler County, Pennsylvania, United States. The population was 6,906 at the 2010 census. Lyndora was linked to Butler, Evans City and Pittsburgh in 1908 by the Pittsburgh, Harmony, Butler and New Castle Railway, an interurban trolley line. The line closed on June 15, 1931, and the trolleys were replaced by buses.