Furnace is an unincorporated community located in Estill County, Kentucky, United States.

Settlers found the surrounding area rich in iron ore.[2] The Estill Steam Furnace, a blast furnace was established in about 1830.

[2] A post office was established in the community in 1857, and named for the Estill Steam Furnace.

[3] The post office was discontinued in 1975.

This Estill County, Kentucky state location article is a stub.