Oak Grove, VA has a population of 2,037 and is the 10,909th largest city in the United States. The population density is 1,742 per sq mi which is 810% higher than the Virginia average and 1823% higher than the national average. The median age in Oak Grove is 37 which is approximately 1% lower than the Virginia average of 38. In Oak Grove, 50% of the population over 15 years of age are married, 24% speak English and 34% speak Spanish. 27% of Oak Grove residents were born in Virginia, 13% were born out of state, 3% were born outside of the United States and 57% were foreign born.