Oakton, VA has a population of 36,860 and is the 1,109th largest city in the United States. The population density is 3,776 per sq mi which is 1764% higher than the Virginia average and 4068% higher than the national average. The median age in Oakton is 37 which is approximately 3% lower than the Virginia average of 38. In Oakton, 60% of the population over 15 years of age are married, 60% speak English and 14% speak Spanish. 23% of Oakton residents were born in Virginia, 41% were born out of state, 3% were born outside of the United States and 33% were foreign born.