Boundary Atlas

ZIP code 07840: Hackettstown, NJ

ZIP code 07840 is in Hackettstown (33% of residents), Beattystown (15%), Panther Valley (13%) and Vienna (2.1%), in Warren County (78%) and Morris County (22%), New Jersey. 37% of its residents live outside city limits. It is in New Jersey's 7th congressional district. Its state senate districts are State Senate District 24 (50%) and State Senate District 23 (50%); its state house districts are Assembly District 24 (50%) and Assembly District 23 (50%).

31,255residents (2020 Census)
37.3 sq miland area
6cities and towns
1congressional district
28voting precincts

See it on the mapAll of New Jersey

City and county

City or townShare of ZIP residents
Hackettstown33%
Beattystown15%
Panther Valley13%
Vienna2.1%
Allamuchy0.3%
Flanders0.2%

CountyShare of ZIP residents
Warren County78%
Morris County22%

Town or county subdivisionShare of ZIP residents
Hackettstown town33%
Mansfield township17%
Allamuchy township14%
Independence township14%
Washington township12%
Mount Olive township10%

Congressional district

Congressional districtShare of ZIP residents
New Jersey's 7th congressional district (NJ-07)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NJ-07)Thomas H. Kean, Jr. (R)202-225-5361100%
U.S. SenatorAndy Kim (D)202-224-4744statewide
U.S. SenatorCory A. Booker (D)202-224-3224 · contact formstatewide
State Senator (State Senate District 24)Parker Space (R)973-300-020050%
State Senator (State Senate District 23)Doug Steinhardt (R)908-835-055250%
Assembly Member (Assembly District 24)Dawn Fantasia (R)908-955-742950%
Assembly Member (Assembly District 24)Mike Inganamort (R)908-955-742950%
Assembly Member (Assembly District 23)Erik Peterson (R)908-238-025150%
Assembly Member (Assembly District 23)John DiMaio (R)908-684-955050%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2450%
State Senate District 2350%

State house districtShare of ZIP residents
Assembly District 2450%
Assembly District 2350%

Voting precincts

28 voting precincts overlap ZIP 07840. Map them, with each precinct's share of the ZIP's residents.

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ZIP 07840 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.