[1][2] Anderson (with a 2010 Census population of 342[22]), Beattystown (4,554[23]) and Port Murray (129[24]) are unincorporated communities and census-designated places (CDPs) located within the township.

[25][26][27] Other unincorporated communities, localities and place names located partially or completely within the township include Karrsville, Mount Bethel, Penwell, Rockport and Stephensburg.

[29][30] The Township's economic data (as is all of Warren County) is calculated by the U.S. Census Bureau as part of the Allentown-Bethlehem-Easton, PA-NJ Metropolitan Statistical Area.

The 2010 United States census counted 7,725 people, 2,972 households, and 2,000 families in the township.

[42] As of the 2000 United States census[15] there were 6,653 people, 2,334 households, and 1,750 families residing in the township.

[4][45][46][47][48] In January 2020, Tony Cardell, who had been elected as a Republican in November 2019, announced that he would not be taking office for the seat expiring in December 2022.

[49] Glen McGuinness was elected in November 2021 to fill the balance of the term of office.

[51][52][53] For the 119th United States Congress, New Jersey's 7th congressional district is represented by Thomas Kean Jr. (R, Westfield).

[55] For the 2024-2025 session, the 23rd legislative district of the New Jersey Legislature is represented in the State Senate by Doug Steinhardt (R, Lopatcong Township) and in the General Assembly by John DiMaio (R, Hackettstown) and Erik Peterson (R, Franklin Township).

[60][61] Constitutional officers of Warren County are: Clerk Holly Mackey (R, Alpha; 2027),[62][63] Sheriff James McDonald Sr. (R, Phillipsburg; 2025)[64][65] and Surrogate Michael J. Doherty (R, Washington; 2025).

[69] Among the township's 2010 Census population, 57.5% (vs. 62.3% in Warren County) were registered to vote, including 74.6% of those ages 18 and over (vs. 81.5% countywide).

[80] Public school students in seventh through twelfth grades attend the schools of the Warren Hills Regional School District, which also serves students from the municipalities of Franklin Township, Washington Borough and Washington Township, along with those from Oxford Township (for 9–12 only, attending on a tuition basis).

[81][82][83] Schools in the district (with 2018–19 enrollment data from the National Center for Education Statistics[84]) are Warren Hills Regional Middle School[85] with 542 students in grades 7 and 8 (located in Washington Borough) and Warren Hills Regional High School[86] with 1,205 students in grades 9–12 (located in Washington Township).

[96] A small general aviation airport, named Hackettstown Airport and holding the official database designation of (FAA LID: N05) is in Mansfield Township, only a few hundred yards from the municipal border with Hackettstown.

South of Hackettstown, Norfolk Southern's Washington Secondary passes the location of the Rockport Wreck, a train accident that occurred on June 16, 1925, that resulted in 50 fatalities.