Washington Township is a township in Erie County, Pennsylvania, United States. The population was 4,395 at the 2020 census, down from 4,432 at the 2010 census. The township surrounds the borough of Edinboro.

U.S. Route 6N (US 6N) is a 28-mile-long (45 km) auxiliary route of US 6 that is located in Erie County, Pennsylvania in the United States. The western terminus is situated at US 20 in West Springfield, one-half mile (0.80 km) north of Interstate 90 (I-90) exit 3. Its eastern terminus is located at US 6 and US 19, west of Mill Village.