Lambertville is a city within Hunterdon County in the U.S. state of New Jersey. As of the 2020 United States census, the city's population was 4,139, an increase of 233 (+6.0%) from the 3,906 recorded at the 2010 census, which in turn reflected an increase of 38 (1.0%) from the 3,868 counted in the 2000 census.

New Hope is a borough in Bucks County, Pennsylvania, United States. The population was 2,612 at the 2020 census. New Hope is located approximately 30 mi (48 km) north of Philadelphia, and lies on the west bank of the Delaware River at its confluence with Aquetong Creek. New Hope and neighboring Solebury and Upper Makefield townships are part of the Philadelphia metropolitan area. The two-lane New Hope–Lambertville Bridge carries automobile and foot traffic across the Delaware to Lambertville, New Jersey, on the east bank. New Hope's primary industry is tourism.