As of the 2010 United States Census, the district had a population of 210,162, of whom 156,827 (74.6%) were of voting age. The racial makeup of the district was 120,979 (57.6%) White, 51,652 (24.6%) African American, 876 (0.4%) Native American, 5,896 (2.8%) Asian, 113 (0.1%) Pacific Islander, 24,769 (11.8%) from some other race, and 5,877 (92.8%) from two or more races. Hispanic or Latino of any race were 45,619 (21.7%) of the population.[2] The district had 137,247 registered voters as of November 2015, of whom 66,054 (48.1%) were registered as unaffiliated, 54,514 (39.7%) were registered as Democrats, 16,564(12.1%) were registered as Republicans and 115 (0.1%) were registered to other parties.[3]
The 1964 Supreme Court decision in Reynolds v. Sims required legislative districts' populations be equal as possible. As an interim measure, the 5rd District in the 1965 State Senate election encompassed all of Ocean and Monmouth counties which elected two members of the Senate at-large. Republicans Richard R. Stout and William T. Hiering won this election for a two-year term.[6] For the 1967 and 1971 elections, the 5th consisted of only Monmouth County and elected two and three Senators respectively.[7][8] Republicans Stout and Alfred N. Beadleston won the 1967 election for a four-year term while Stout, Beadleston, and Republican Assemblyman Joseph Azzolina won in the 1971 election for a two-year term.[9][10]
Between 1967 and 1973, the 5th Senate District was split into two Assembly districts, each electing two members. As Monmouth County gained population following the 1970 Census, an additional Assembly member was elected at-large for the 1971 election. The members elected to the Assembly from each district are as follows:[9][11][10]
Since the creation of the 40-district legislative map in 1973, the 5th District has always been based around the city of Camden and nearby suburbs. In the 1973 iteration of the map, the district began in Camden city and traveled southeast to Hi-Nella.[12] In 1981, some Camden County boroughs and Haddon Township were removed but added to the district were Gloucester City, Bellmawr, and Runnemede in Camden County and Deptford Township and Woodbury Heights.[13] No major changes were made to the district in the 1991 or 2001 reapportionments.[14][15] The 2011 apportionment added Audubon Park (from the 6th District) and Harrison Township, Mantua Township and Wenonah (all from the 3rd District). Municipalities that had been in the 4th District as part of the 2001 apportionment that were shifted out of the district as of 2011 are Woodbury Heights (to the 3rd District), and Hi-Nella, Somerdale and Stratford (all to the 6th District).[16]
The territory currently in the 5th has been in Democratic hands without interruption since 1973. Indeed, the 5th is one of the few districts in the state to have ever elected only one party to all Senate and Assembly seats in every election since 1973.[17]