Boundary Atlas

ZIP code 07863: Oxford, NJ

ZIP code 07863 is in Oxford (26% of residents) and Buttzville (4.3%), in Warren County, New Jersey. 70% of its residents live outside city limits. It is in New Jersey's 7th congressional district. Its state senate district is State Senate District 23; its state house district is Assembly District 23.

4,017residents (2020 Census)
19.9 sq miland area
2cities and towns
1congressional district
10voting precincts

See it on the mapAll of New Jersey

City and county

City or townShare of ZIP residents
Oxford26%
Buttzville4.3%

CountyShare of ZIP residents
Warren County100%

Town or county subdivisionShare of ZIP residents
Oxford township61%
Mansfield township20%
White township11%
Liberty township4.5%
Washington township3.6%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 23100%

State house districtShare of ZIP residents
Assembly District 23100%

Voting precincts

10 voting precincts overlap ZIP 07863. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:07863")

ZIP 07863 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.