Easton is a city located in Northampton County, Pennsylvania, on the Delaware River. It has a population of around 27, 000 and is the county seat of Northampton County. CAMDEN is a city in CAMDEN County, New Jersey, located directly across the Delaware River from Philadelphia. It has a population of around 74, 000 and is the county seat of CAMDEN County. Trenton is the capital city of New Jersey, located on the Delaware River. It has a population of around 84, 000 and is the county seat of Mercer County.