[1][2] Municipalities bordering the borough include the Bergen County communities of Bergenfield, Cresskill, Demarest, Haworth, New Milford and Oradell.

[40] As of the 2000 United States census[17] there were 17,503 people, 6,370 households, and 4,758 families residing in the borough.

Another park in Dumont is Twin Boro Field, located on the opposite side of the borough.

[7] The borough form of government used by Dumont is a "weak mayor / strong council" government in which council members act as the legislative body with the mayor presiding at meetings and voting only in the event of a tie.

The mayor can veto ordinances subject to an override by a two-thirds majority vote of the council.

[43][44] As of 2024[update], the mayor of the Borough of Dumont is Republican John W. Russell III, whose term of office ends December 31, 2027.

Members of the Dumont Borough Council are Doreen Aponte (R, 2025), Tom Kelly (R, 2024), Christopher Kourelakos (R, 2026), Daniel L. Labarbera (R, 2026), Donald Morrell (R, 2025) and Carole Stewart (R, 2024; appointed to serve an unexpired term).

[3][45][46][47][48][49] In January 2020, the borough council appointed Carl Manna to fill the seat expiring in December 2020 that was vacated by Andrew LaBruno when he took office as mayor.

[50] In March 2018, the borough council appointed Lisa Rossillo to fill the seat expiring in December 2019 that was vacated by Barbara Correa following her resignation.

[51][52] In February 2017, the borough council selected Jared Geist from a list of three candidates nominated by the Republican municipal committee to fill the seat expiring in December 2017 that had been vacated by Matthew Hayes, who resigned from office the previous month, due to illness.

[53] In May 2014, Carl Manna was selected by the borough council to fill the seat expiring in December 2016 that had been held by Matthew M. Carrick until he resigned from office a month earlier.

[54] The Dumont Police Department, comprised of 31 officers, operates out of the Borough Hall and protects and serves the community around the clock.

[56] The Dumont Fire Department responds to between 400 & 500 calls per year, including mutual aid to neighboring municipalities including Tenafly, Bergenfield, Cresskill, New Milford, Oradell, River Edge, and the Northern Valley towns when needed.

[57] The Dumont Fire Department is equipped with eight pieces of apparatus (four engines, one ladder, one rescue, one squad, and a utility truck) at the following locations:[56] The Dumont Volunteer Ambulance Corps, established in 1937, is located at 108 Brook Street.

[60][61][62] For the 119th United States Congress, New Jersey's 5th congressional district is represented by Josh Gottheimer (D, Wyckoff).

[65] For the 2024–2025 session, the 39th legislative district of the New Jersey Legislature is represented in the State Senate by Holly Schepisi (R, River Vale) and in the General Assembly by Robert Auth (R, Old Tappan) and John V. Azzariti (R, Saddle River).

As of 2025[update], the county executive is James J. Tedesco III (D, Paramus), whose four-year term of office ends December 31, 2026.

[67] Bergen County's Commissioners are: Thomas J. Sullivan Jr. (D, Montvale, 2025),[68] Chair Germaine M. Ortiz (D, Emerson, 2025),[69] Joan Voss (D, Fort Lee, 2026),[70] Vice Chair Mary J. Amoroso (D, Mahwah, 2025),[71] Rafael Marte (D, Bergenfield, 2026),[72] Steven A. Tanelli (D, North Arlington, 2027)[73] and Tracy Silna Zur (D, Franklin Lakes, 2027).

[74][75][76][77][78][79][80][81] Bergen County's constitutional officials are: Clerk John S. Hogan (D, Northvale, 2026),[82][83] Sheriff Anthony Cureton (D, Englewood, 2027)[84][85] and Surrogate Michael R. Dressler (D, Cresskill, 2026).

[89] Among the borough's 2010 Census population, 60.2% (vs. 57.1% in Bergen County) were registered to vote, including 77.7% of those ages 18 and over (vs. 73.7% countywide).

[118][119] Newbury Academy is a private alternative high school for students in grades 9–12 that was founded in Teaneck in 2001 and moved to Dumont in 2003.

As of September 2008, Newbury Academy has become a virtual school with all classes being conducted online, with teachers making weekly visits to students' homes.