Arlington is denser and more diverse than it was 10 years ago, according to recently-released 2020 Census data.
The population living within the county’s 26 square miles now sits at 238,643 — a 14.9% increase over 2010, when 207,627 people called Arlington home. That outpaced the rate of population growth for Virginia and the U.S. as a whole, at 7.9% and 7.4%, respectively.