Fluvanna County is a county located in the Piedmont region of the Commonwealth of Virginia, United States. As of the 2020 census, the population was 27,249. Its county seat is Palmyra, while the most populous community is the census designated place of Lake Monticello.

Palmyra is a census-designated place (CDP) in and the county seat of Fluvanna County, Virginia, United States. The population as of the 2010 census was 104. Palmyra lies on the eastern bank of the Rivanna River along U.S. Route 15. The ZIP code for Palmyra and surrounding rural land is 22963.