Pierre was licensed by the English court in Lancaster County in 1730 to trade with the Indians in the south-western Pennsylvania area.
Three other prominent areas that have been labeled tri-state areas are the Cincinnati tri-state area, including Ohio, Kentucky, and Indiana; the Pittsburgh tri-state area, covering parts of Pennsylvania, Ohio, and West Virginia; and the Chicago tri-state area, also known as Chicagoland, which includes Illinois, Indiana, and Wisconsin.
Pittsburgh | Metropolitan Museum of Art | Metropolitan Opera | Pittsburgh Steelers | Pittsburgh Pirates | University of Pittsburgh | local government area | San Francisco Bay Area | Important Bird Area | Unincorporated area | Metropolitan Police Service | Pittsburgh Penguins | Greater Toronto Area | Urban area | metropolitan area | Southern Metropolitan Football League | Metropolitan | Manchester Metropolitan University | Metropolitan bishop | New York metropolitan area | Bay Area Rapid Transit | urban area | Pittsburgh International Airport | European Economic Area | University of Pittsburgh Medical Center | Metropolitan Atlanta Rapid Transit Authority | Metropolitan Railway | Metropolitan Borough of Wirral | Metropolitan Borough of Sefton | Area 51 |