Bucks County /

Bucks County is a county located in the U.S. state (commonwealth) of Pennsylvania. The county seat is Doylestown. This county is part of the Delaware Valley area. As of 2010, the population was 625,249. This makes Bucks the fourth most populous county in Pennsylvania (after Philadelphia, Allegheny, and Montgomery counties), and the 95th most populous county in the United States. As of 2000, it is the 76th wealthiest county in the nation as measured by median family income. Bucks County was one of the three original counties in Pennsylvania. It was named by William Penn in 1682 after Buckinghamshire, England, the county where he lived and from which his family originated. Bucks is the abbreviation for Buckinghamshire, and both names are used interchangeably in England. Penn's home, Pennsbury Manor, is located within Bucks County. Place names in Bucks County derived from places in Buckinghamshire include Buckingham, Chalfont (named after Chalfont St Giles), Wycombe and Solebury (spelled Soulbury in England). Buckingham was the former county town of Buckinghamshire; Buckingham, PA, (now known as Bristol, not to be confused with the present village of Buckingham, near Doylestown) was