Magnolia is a borough in Camden County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 4,341, reflecting a decline of 68 (-1.5%) from the 4,409 counted in the 2000 Census, which had in turn declined by 452 (-9.3%) from the 4,861 counted in the 1990 Census.
Magnolia was incorporated as a borough by an act of the New Jersey Legislature on April 14, 1915, from portions of the now-defunct Centre Township, and parts of Clementon, based on the results of a referendum held on May 12, 1915. The borough was named for magnolia trees that grow in the area.
According to the United States Census Bureau, Magnolia borough had a total area of 0.968 square miles (2.507 km2), all of which was land.
The borough borders the Camden County municipalities of Barrington, Gloucester Township, Lawnside, Runnemede and Somerdale.
The 2010 United States Census counted 4,341 people, 1,710 households, and 1,147.410 families in the borough. The population density was 4,485.3 per square mile (1,731.8/km2). There were 1,850 housing units at an average density of 1,911.5 per square mile (738.0/km2). The racial makeup was 74.71% (3,243) White, 18.27% (793) Black or African American, 0.30% (13) Native American, 1.89% (82) Asian, 0.05% (2) Pacific Islander, 2.21% (96) from other races, and 2.58% (112) from two or more races. Hispanic or Latino of any race were 7.83% (340) of the population.
Of the 1,710 households, 28.1% had children under the age of 18; 45.4% were married couples living together; 15.5% had a female householder with no husband present and 32.9% were non-families. Of all households, 26.1% were made up of individuals and 8.7% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 3.08.
21.8% of the population were under the age of 18, 8.9% from 18 to 24, 29.0% from 25 to 44, 28.1% from 45 to 64, and 12.2% who were 65 years of age or older. The median age was 38.3 years.