(Virginia)
Locust Grove is an unincorporated community in eastern Orange County, Virginia, United States. Its ZIP code is 22508, the population of the ZIP Code Tabulation Area was 7,605 at the time of the 2000 census and increased by 60% to 12,696 by the 2010 census, making it the largest population center within the county. While Locust Grove has historically been centered on the intersection of State Routes 20 and 611, most of the current population and commercial activity is located along the State Route 3 corridor, several miles to the east. It is named after the Black Locust trees common to the area.