Kennett Square is a borough in Chester County, Pennsylvania, United States. It is known as the Mushroom Capital of the World because mushroom farming in the region produces over 500 million pounds of mushrooms a year, totaling half of the United States mushroom crop. To celebrate this heritage, Kennett Square has an annual Mushroom Festival, where the town shuts down to have a parade, tour mushroom farms, and buy and sell food and other goods. It is also home to the corporate headquarters of Genesis HealthCare which administers elderly care facilities. Located in the Delaware Valley, Kennett Square is considered a suburb of both Philadelphia, Pennsylvania and Wilmington, Delaware. The local high school is Kennett High School. Its population was 6,072 at the 2010 census. It is also the birthplace of the sister of the 46th and current president of the United States, Valerie Biden.

Delaware County, colloquially referred to as Delco, is a county located in the U.S. state of Pennsylvania that borders Philadelphia. With a population of 566,747, it is the fifth most populous county in Pennsylvania, and the third smallest in area. The county was created on September 26, 1789, from part of Chester County, and named for the Delaware River. Its county seat is Media. Until 1850, Chester was the county seat of Delaware County and, before that, of Chester County. Delaware County is adjacent to the city-county of Philadelphia and is included in the Philadelphia–Camden–Wilmington, PA–NJ–DE–MD Metropolitan Statistical Area. Delaware County is the only county covered in its entirety by area codes 610 and 484.

Chesapeake City is a town in Cecil County, Maryland, United States. The population was 673 at the 2010 census. The town was originally named by Bohemian colonist Augustine Herman the Village of Bohemia — or Bohemia Manor — but the name was changed in 1839 after the Chesapeake and Delaware Canal (C&D Canal) was built in 1829. Today, the town contains numerous old homes from that era that have been converted into bed and breakfasts, restaurants and the local historical museum.

The Village of Valley Forge is an unincorporated settlement located on the west side of Valley Forge National Historical Park at the confluence of Valley Creek and the Schuylkill River in Pennsylvania, United States. The remaining village is in Schuylkill Township of Chester County, but once spanned Valley Creek into Montgomery County. The name Valley Forge is often used to refer to anywhere in the general vicinity of the park, and many places actually in King of Prussia, Trooper, Oaks, and other nearby communities will use the name, leading to some ambiguity on the actual location of the modern village. There is a partial re-creation of the historic village from the time of the American Revolution that is located next door, and just within the outskirts of the park. Valley Forge is known by travelers in the Philadelphia area as the westbound control city on Interstate 76 (the Schuylkill Expressway), as it is near where I-76 joins the Pennsylvania Turnpike. This remains, despite no exit being designated for Valley Forge, since the previous exit became the off-ramp to Mall Boulevard, serving King of Prussia.