Yardley is a borough in Bucks County, Pennsylvania, United States. The small community of Yardley is bordered by the Delaware River and Ewing, New Jersey on the east, and by Lower Makefield Township on the north, west, and south. Yardley was founded by William Yardley, who immigrated to America in July, 1682 with his family. He made an agreement with William Penn, before leaving England, to buy 500 acres (2.0 km2) for ten pounds. A survey was completed in October 1682, and the area William Yardley settled was called “Prospect Farm.” It was located just outside of the present Yardley Borough. William Yardley died in 1693, and his family in 1702-1703, possibly of smallpox. The family’s burial plots are located in Slate Hill Cemetery, one of the oldest Quaker burial grounds in the state.
The median income for a household in the township was $58,221, and the median income for a family was $70,938. Males had a median income of $50,816 versus $41,893 for females. The per capita income for the township was $32,802. About 1.7% of families and 3.1% of the population were below the poverty line, including 2.6% of those under age 18 and 3.3% of those age 65 or over.