Boundary Atlas

ZIP code 08844: Hillsborough, NJ

ZIP code 08844 is in Hillsborough (51% of residents), Blackwells Mills (20%), Belle Mead (2.5%), Neshanic (2.0%), Flagtown (1.6%) and Millstone (1.0%), in Somerset County, New Jersey. 22% of its residents live outside city limits. It is in New Jersey's 12th congressional district (92%) and New Jersey's 7th congressional district (7.7%). Its state senate district is State Senate District 16; its state house district is Assembly District 16.

43,333residents (2020 Census)
55.2 sq miland area
6cities and towns
2congressional districts
34voting precincts

See it on the mapAll of New Jersey

City and county

City or townShare of ZIP residents
Hillsborough51%
Blackwells Mills20%
Belle Mead2.5%
Neshanic2.0%
Flagtown1.6%
Millstone1.0%

CountyShare of ZIP residents
Somerset County100%

Town or county subdivisionShare of ZIP residents
Hillsborough township99%
Millstone borough1.0%

Congressional districts

Congressional districtShare of ZIP residents
New Jersey's 12th congressional district (NJ-12)92%
New Jersey's 7th congressional district (NJ-07)7.7%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NJ-12)Bonnie Watson Coleman (D)202-225-580192%
U.S. Representative (NJ-07)Thomas H. Kean, Jr. (R)202-225-53617.7%
U.S. SenatorAndy Kim (D)202-224-4744statewide
U.S. SenatorCory A. Booker (D)202-224-3224 · contact formstatewide
State Senator (State Senate District 16)Andrew Zwicker (Democratic)908-308-8672100%
Assembly Member (Assembly District 16)Mitchelle Drulis (Democratic)908-968-4329100%
Assembly Member (Assembly District 16)Roy Freiman (Democratic)908-968-4329100%

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 16100%

State house districtShare of ZIP residents
Assembly District 16100%

Voting precincts

34 voting precincts overlap ZIP 08844. Map them, with each precinct's share of the ZIP's residents.

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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:08844")

ZIP 08844 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.