Newfield is a borough in Gloucester County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 1,553, reflecting a decline of 63 (-3.9%) from the 1,616 counted in the 2000 Census, which had in turn increased by 24 (+1.5%) from the 1,592 counted in the 1990 Census.
Newfield was formed as a borough by an act of the New Jersey Legislature on March 8, 1924, from portions of Franklin Township, based on the results of a referendum held on April 1, 1924. In the weeks before the legislature approved the formation of the borough, a group of 240 residents traveled to Trenton by train to lobby on behalf of the creation of an independent municipality. The borough's name derives from its status as a new-field development.
According to the United States Census Bureau, the borough had a total area of 1.74 square miles (4.51 km2), including 1.74 square miles (4.50 km2) of land and <0.01 square miles (0.01 km2) of water (0.17%).
The borough borders the municipalities of Franklin Township in Gloucester County and Vineland in Cumberland County.
The 2010 United States Census counted 1,553 people, 579 households, and 453 families in the borough. The population density was 912.0 per square mile (352.1/km2). There were 626 housing units at an average density of 367.6 per square mile (141.9/km2). The racial makeup was 94.66% (1,470) White, 2.19% (34) Black or African American, 0.26% (4) Native American, 0.32% (5) Asian, 0.00% (0) Pacific Islander, 0.97% (15) from other races, and 1.61% (25) from two or more races. Hispanic or Latino of any race were 6.57% (102) of the population.
Of the 579 households, 31.1% had children under the age of 18; 59.2% were married couples living together; 12.4% had a female householder with no husband present and 21.8% were non-families. Of all households, 18.3% were made up of individuals and 7.6% had someone living alone who was 65 years of age or older. The average household size was 2.68 and the average family size was 3.03.
23.4% of the population were under the age of 18, 7.0% from 18 to 24, 24.5% from 25 to 44, 31.0% from 45 to 64, and 14.1% who were 65 years of age or older.