Chesterfield County is a county located in the Commonwealth of Virginia, a state of the United States. As of the 2006 population estimate, the county's population has risen to 306,000. From 2000 to 2006, the county added over 35,000 new residents and Chesterfield County is now the fourth largest municipality in Virginia (behind Fairfax County, Virginia Beach and Prince William County respectively). Its county seat is Chesterfield6. It is located in the Richmond-Petersburg region and is a portion of the Richmond Metropolitan Statistical Area (MSA). Much of the northern portion of Chesterfield County accounts for what is referred to as Metropolitan Richmond's "South Side".
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