Gunlock is an unincorporated community in Magoffin County, Kentucky, United States. It lies along Route 7 southeast of the city of Salyersville, the county seat of Magoffin County. Its elevation is 1,001 feet (305 m).
A post office was established in the community in 1936. The first postmaster is said to have taken the name Gunlock from a newspaper article he read about a western ranch. Its post office, with the ZIP code of 41632, closed in 1998.
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