ZIP code 07004: Fairfield, NJ
ZIP code 07004 is in Essex County, New Jersey, outside any city or Census-designated place. It is in New Jersey's 11th congressional district. Its state senate district is State Senate District 40; its state house district is Assembly District 40.
See it on the mapAll of New Jersey
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Essex County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Fairfield township | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| New Jersey's 11th congressional district (NJ-11) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (NJ-11) | Analilia Mejia (D) | 202-225-5034 | 100% |
| U.S. Senator | Andy Kim (D) | 202-224-4744 | statewide |
| U.S. Senator | Cory A. Booker (D) | 202-224-3224 · contact form | statewide |
| State Senator (State Senate District 40) | Kristin Corrado (R) | 973-237-1360 | 100% |
| Assembly Member (Assembly District 40) | Al Barlas (R) | 862-702-8458 | 100% |
| Assembly Member (Assembly District 40) | Chris DePhillips (R) | 100% |
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
- Essex County website: http://www.essex-countynj.org/
- Essex County laws: search for the Essex County, New Jersey code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 40 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 40 | 100% |
Voting precincts
5 voting precincts overlap ZIP 07004. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:07004")
ZIP 07004 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.