Free Union is a census-designated place (CDP) in Albemarle County, Virginia, United States, ten miles north-northwest of Charlottesville. The population as of the 2010 Census was 193. It is a very small hamlet consisting of a private school (Free Union Country School), a doctor's office, a post office, a country store, a homebuilder, and several dozen homes. Otherwise it is entirely rural in character. A few miles north of this hamlet is a winery.