Oakton, VA has a population of 36,748 and is the 1,144th largest city in the United States. The population density is 3,764 per sq mi which is 1867% higher than the Virginia average and 4054% higher than the national average. The median age in Oakton is 37 which is approximately 2% lower than the Virginia average of 38. In Oakton, 61% of the population over 15 years of age are married, 61% speak English and 10% speak Spanish. 24% of Oakton residents were born in Virginia, 41% were born out of state, 2% were born outside of the United States and 32% were foreign born.