ZIP code 07870: Washington, NJ
ZIP code 07870 is in Morris County, New Jersey, outside any city or Census-designated place. It is in New Jersey's 7th congressional district. Its state senate district is State Senate District 24; its state house district is Assembly District 24.
See it on the mapAll of New Jersey
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Morris County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Washington township | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| New Jersey's 7th congressional district (NJ-07) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (NJ-07) | Thomas H. Kean, Jr. (R) | 202-225-5361 | 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 24) | Parker Space (R) | 973-300-0200 | 100% |
| Assembly Member (Assembly District 24) | Dawn Fantasia (R) | 908-955-7429 | 100% |
| Assembly Member (Assembly District 24) | Mike Inganamort (R) | 908-955-7429 | 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
- Morris County laws: search for the Morris County, New Jersey code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 24 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 24 | 100% |
Voting precincts
3 voting precincts overlap ZIP 07870. 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:07870")
ZIP 07870 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.