A county line is the border between two counties.
County Line, County line, or County lines may also refer to:
County Line Branch, a stream in Pennsylvania, United States County Line (High Valley album) County Line (Southern Pacific album) "County Line" (song) County Line (film) County Line, Alabama County Line, Arkansas County Line, Wisconsin County Line Baptist Church, Dudleyville, Alabama, United States County Line High School, Branch, Alabama, United States County Line station (disambiguation), stations of the name El Cerrito, Contra Costa County, California, formerly County Line County line (New Jersey), an aspect of primary election ballots in New Jersey County lines (drug trafficking), a form of drug trafficking in the United Kingdom
See also County Line Bridge (disambiguation)