Washington Crossing is on the east bank of the Delaware River in northwestern Mercer County. New Jersey Route 29 (River Road) passes through the community, leading southeast (downriver) 8 miles (13 km) to Trenton, the state capital, and northwest (upriver) 7 miles (11 km) to Lambertville. The Washington Crossing Bridge, built in 1904, crosses the Delaware to Washington Crossing, Pennsylvania, from where Pennsylvania Route 532 leads southwest 6 miles (10 km) to Newtown, Pennsylvania.
According to the United States Census Bureau, the CDP had a total area of 0.29 square miles (0.75 km2), of which 0.25 square miles (0.65 km2) were land and 0.04 square miles (0.10 km2), or 14.6%, was water.[1]
^Scannell's New Jersey's First Citizens and State Guide, p. 518. J. J. Scannell, 1919. Accessed December 7, 2021. "William Hartwell Blackwell - Titusville - Fruitgrower and Assemblyman. Born at Washington's Crossing, N. J., on July 22, 1882; son of Charles E. and Sarah E. (Hartwell) Blackwell."