Port Norris is an unincorporated community and census-designated place (CDP) located within Commercial Township, in Cumberland County, New Jersey, United States. It is part of the Vineland-Millville- Bridgeton Primary Metropolitan Statistical Area for statistical purposes. As of the 2000 United States Census, the CDP's population was 1,377. Legislation was passed in 1911 allowing voters to choose to incorporate Port Norris as a borough, independent from Commercial Township, but it was defeated in a referendum.
According to the United States Census Bureau, the CDP had a total area of 6.829 square miles (17.685 km2), including 6.335 square miles (16.407 km2) of land and 0.494 square miles (1.279 km2) of water (7.23%). Port Norris is located near the mouth of the Maurice River.
The 2010 United States Census counted 1,377 people, 481 households, and 354.978 families in the CDP. The population density was 217.4 per square mile (83.9/km2). There were 552 housing units at an average density of 87.1 per square mile (33.6/km2). The racial makeup was 66.23% (912) White, 26.22% (361) Black or African American, 0.29% (4) Native American, 0.73% (10) Asian, 0.00% (0) Pacific Islander, 1.89% (26) from other races, and 4.65% (64) from two or more races. Hispanic or Latino of any race were 6.32% (87) of the population.
Of the 481 households, 29.5% had children under the age of 18; 43.7% were married couples living together; 23.3% had a female householder with no husband present and 26.2% were non-families. Of all households, 20.4% were made up of individuals and 9.8% had someone living alone who was 65 years of age or older.