Boundary Atlas

ZIP code 08831: Monroe, NJ

ZIP code 08831 is in Jamesburg (10% of residents), Rossmoor (5.4%), Clearbrook (5.3%), Concordia (4.5%), Whittingham (4.3%), Monroe Manor (4.0%), Forsgate (3.7%), Regency at Monroe (3.7%), Stonebridge (2.9%), The Ponds (1.7%), Renaissance at Monroe (1.2%) and Encore at Monroe (1.1%), in Middlesex County, New Jersey. 52% of its residents live outside city limits. It is in New Jersey's 12th congressional district. Its state senate districts are State Senate District 14 (99%), State Senate District 16 (0.8%), State Senate District 12 (0.5%) and State Senate District 18 (0.1%); its state house districts are Assembly District 14 (99%), Assembly District 16 (0.8%), Assembly District 12 (0.5%) and Assembly District 18 (0.1%).

55,123residents (2020 Census)
51.3 sq miland area
12cities and towns
1congressional district
52voting precincts

See it on the mapAll of New Jersey

City and county

City or townShare of ZIP residents
Jamesburg10%
Rossmoor5.4%
Clearbrook5.3%
Concordia4.5%
Whittingham4.3%
Monroe Manor4.0%
Forsgate3.7%
Regency at Monroe3.7%
Stonebridge2.9%
The Ponds1.7%
Renaissance at Monroe1.2%
Encore at Monroe1.1%

CountyShare of ZIP residents
Middlesex County100%

Town or county subdivisionShare of ZIP residents
Monroe township88%
Jamesburg borough10%
South Brunswick township0.8%
Old Bridge township0.5%
East Brunswick township0.1%

Congressional district

Congressional districtShare of ZIP residents
New Jersey's 12th congressional district (NJ-12)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NJ-12)Bonnie Watson Coleman (D)202-225-5801100%
U.S. SenatorAndy Kim (D)202-224-4744statewide
U.S. SenatorCory A. Booker (D)202-224-3224 · contact formstatewide
State Senator (State Senate District 14)Linda Greenstein (Democratic)609-395-991199%
State Senator (State Senate District 16)Andrew Zwicker (Democratic)908-308-86720.8%
State Senator (State Senate District 12)Owen Henry (R)732-607-75800.5%
State Senator (State Senate District 18)Patrick Diegnan (Democratic)908-757-16770.1%
Assembly Member (Assembly District 14)Tennille McCoy (Democratic)609-631-019899%
Assembly Member (Assembly District 14)Wayne DeAngelo (Democratic)609-631-750199%
Assembly Member (Assembly District 16)Mitchelle Drulis (Democratic)908-968-43290.8%
Assembly Member (Assembly District 16)Roy Freiman (Democratic)908-968-43290.8%
Assembly Member (Assembly District 12)Alex Sauickie (R)609-758-02050.5%
Assembly Member (Assembly District 12)Rob Clifton (R)732-970-63860.5%
Assembly Member (Assembly District 18)Robert Karabinchak (Democratic)732-548-14060.1%
Assembly Member (Assembly District 18)Sterley Stanley (Democratic)732-875-38330.1%
MayorStephen Dalina88%

From Wikidata (community-maintained); confirm on the city's website.

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); Mayors: Wikidata (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1499%
State Senate District 160.8%
State Senate District 120.5%
State Senate District 180.1%

State house districtShare of ZIP residents
Assembly District 1499%
Assembly District 160.8%
Assembly District 120.5%
Assembly District 180.1%

Voting precincts

52 voting precincts overlap ZIP 08831. Map them, with each precinct's share of the ZIP's residents.

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ZIP 08831 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.