Arlington, VA has a population of 226,092 and is the 99th largest city in the United States. The population density is 8,693 per sq mi which is 4442% higher than the Virginia average and 9495% higher than the national average. The median age in Arlington is 34 which is approximately 10% lower than the Virginia average of 38. In Arlington, 47% of the population over 15 years of age are married, 71% speak English and 13% speak Spanish. 19% of Arlington residents were born in Virginia, 55% were born out of state, 3% were born outside of the United States and 23% were foreign born.