Pennsylvania's 6th congressional district is a district in the state of Pennsylvania. It includes all of Chester County and the southeastern portion of Berks County including the city of Reading and its southeastern suburbs. The district is represented by Democrat Chrissy Houlahan, who has served in Congress since 2019. As currently drawn, the district is among the wealthiest in Pennsylvania. The Supreme Court of Pennsylvania redrew the district in February 2018 after ruling the previous map unconstitutional.

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.