Burlington County is a county located in the U.S. state of New Jersey. The county seat is Mount Holly Township. As of the 2010 United States Census, the population was 448,734, an increase of 25,340 (6.0%) from the 423,394 enumerated in the 2000 Census, retaining its position as the 11th-most populous county in the state. The most-populous place was Evesham Township, with 45,538 residents at the time of the 2010 Census, while Washington Township covered 102.71 square miles (266.0 km2), the largest total area of any municipality. The Bureau of Economic Analysis ranked the county as having the 158th-highest per capita income of all 3,113 counties in the United States (and the 11th-highest in New Jersey) as of 2009.