James City County is a county located in the Commonwealth of Virginia. As of the 2010 census, the population was 67,009. The county seat is Williamsburg. Located on the Virginia Peninsula, James City County is included in the Virginia Beach-Norfolk-Newport News, VA-NC Metropolitan Statistical Area. It is often associated with Williamsburg, an independent city, and Jamestown which is within the county. As of 2007, the median household income was $70,487.