White Clay Creek Preserve is a 3,050-acre (1,230 ha) Pennsylvania state park along the valley of White Clay Creek in London Britain Township in Chester County, Pennsylvania in the United States. The park was donated by the DuPont Company in 1984 for the purpose of "preserving the diverse and unique plant and animal species, and the rich cultural heritage of the area". Dupont also donated an additional 528 acres (214 ha) for the adjoining White Clay Creek State Park to the state of Delaware. White Clay Creek Preserve is 3 miles (4.8 km) north of Newark, Delaware on Pennsylvania Route 896.

Chester County, colloquially referred to as Chesco, is a county in the Commonwealth of Pennsylvania. It is located in the Delaware Valley region, located in the southeastern part of the state. As of the 2020 census, the population was 545,823(As of 2022), increasing by 7.1% from 498,886 in 2010. The county seat is the Borough of West Chester. The most populous of its 73 municipalities is Tredyffrin Township. The most populous boroughs are West Chester and Phoenixville. Coatesville is the only municipality in the County organized under the City form of government, a technical rather than demographic distinction. Chester County was one of the three original Pennsylvania counties created by William Penn in 1682. It was named for Chester, England. The county is part of the Southeast Pennsylvania region of the state.