[19] Geographically, the township, and all of Atlantic County, is part of the South Jersey region of the state and of the Atlantic City-Hammonton metropolitan statistical area, which in turn is included in the Philadelphia-Reading-Camden combined statistical area and the Delaware Valley.

[21] The township and its river were named after Eric Pålsson Mullica, early Swedish settler (with Finnish ancestry) born in 1636 who founded a homestead on the river after moving there from the vicinity of Philadelphia, and who later moved to Mullica Hill in Gloucester County.

Elwood is an unincorporated community and census-designated place (CDP) (with a 2010 Census population of 1,437[24]) located within Mullica Township.

[25][26][27] Other unincorporated communities, localities and place names located partially or completely within the township include Amatol, Colwell, Da Costa, Devonshire, East Hammonton, Indian Cabin, Nesco, New Columbia, Pleasant Mills, Speedway, Sweetwater, Weekstown, Wescoatville, West Egg Harbor and Woodland.

[28][29] Unincorporated communities in Mullica Township are largely identified by landmarks such as the Elwood Deli, the Sweetwater Casino, or the Weekstown Firehouse.

[34] The 2010 United States census counted 6,147 people, 2,154 households, and 1,631 families in the township.

[47] As of the 2000 United States census[14] there were 5,912 people, 2,044 households, and 1,537 families residing in the township.

[3][51][52][53][54][55] In June 2019, the Township Committee selected Bruce Crowe from a list of three names nominated by the Republican municipal committee to fill the seat expiring in December 2021 that had been held by William Cornell until he resigned from office the previous month.

[59] For the 119th United States Congress, New Jersey's 2nd congressional district is represented by Jeff Van Drew (R, Dennis Township).

[61] For the 2024-2025 session, the 8th legislative district of the New Jersey Legislature is represented in the New Jersey Senate by Latham Tiver (R, Southampton Township) and in the General Assembly by Andrea Katz (D, Chesterfield Township) and Michael Torrissi (R, Hammonton).

[63][64] As of 2025[update], Atlantic County's Executive is Dennis Levinson (R, Northfield), whose term of office ends December 31, 2027.

[83] Among the township's 2010 Census population, 66.3% (vs. 58.8% in Atlantic County) were registered to vote, including 86.3% of those ages 18 and over (vs. 76.6% countywide).

[98] The Mullica Township Schools serve students in pre-kindergarten through eighth grade.

[100] Schools in the district (with 2020–21 enrollment data from the National Center for Education Statistics.

[108] The school is one of three high schools operated as part of the Greater Egg Harbor Regional High School District, which is comprised of the constituent municipalities of Egg Harbor City, Galloway Township and Hamilton Township, and participates in sending/receiving relationships with Port Republic and Washington Township (Burlington County).

[109] Cedar Creek High School is zoned to serve students from Egg Harbor City, Mullica Township, Port Republic and Washington Township, while students in portions of Galloway and Hamilton townships have the opportunity to attend Cedar Creek through the school of choice program or through attendance in magnet programs offered at Cedar Creek.

[112] Township public school students are also eligible to attend the Atlantic County Institute of Technology in the Mays Landing section of Hamilton Township[113] or the Charter-Tech High School for the Performing Arts, located in Somers Point.

NJ Transit provides bus service in the township on the 554 route that runs between Lindenwold station and Atlantic City.