Occoquan is a town in Prince William County, Virginia. The population was 759 at the 2000 United States Census, but as of the census of 2010, there were 934 people residing in the town of Occoquan. The town is a suburb of Washington, D.C. and is adjacent to Woodbridge. The current mayor is Earnest "Earnie" Porta, who was first elected in 2006, and won re-election in 2008, 2010, and 2012.