ZIP code 07042: Montclair, NJ
ZIP code 07042 is in Essex County, New Jersey, outside any city or Census-designated place. It is in New Jersey's 11th congressional district (65%) and New Jersey's 10th congressional district (35%). Its state senate district is State Senate District 27; its state house district is Assembly District 27.
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 |
|---|---|
| Montclair township | 100% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| New Jersey's 11th congressional district (NJ-11) | 65% |
| New Jersey's 10th congressional district (NJ-10) | 35% |
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
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (NJ-11) | Analilia Mejia (D) | 202-225-5034 | 65% |
| U.S. Representative (NJ-10) | LaMonica McIver (D) | 202-225-3436 | 35% |
| 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 27) | John McKeon (Democratic) | 862-930-7071 | 100% |
| Assembly Member (Assembly District 27) | Alixon Collazos-Gill (Democratic) | 973-509-0388 | 100% |
| Assembly Member (Assembly District 27) | Rosy Bagolie (Democratic) | 973-535-5017 | 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 27 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 27 | 100% |
Voting precincts
24 voting precincts overlap ZIP 07042. 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:07042")
ZIP 07042 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.