ZIP code 08859: Sayreville, NJ
ZIP code 08859 is in Sayreville (79% of residents) and Madison Park (21%), in Middlesex County, New Jersey. It is in New Jersey's 6th congressional district. Its state senate districts are State Senate District 19 (79%) and State Senate District 12 (21%); its state house districts are Assembly District 19 (79%) and Assembly District 12 (21%).
See it on the mapAll of New Jersey
City and county
| City or town | Share of ZIP residents |
|---|---|
| Sayreville | 79% |
| Madison Park | 21% |
| County | Share of ZIP residents |
|---|---|
| Middlesex County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Sayreville borough | 79% |
| Old Bridge township | 21% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| New Jersey's 6th congressional district (NJ-06) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Kennedy O'Brien | 79% | |
| U.S. Representative (NJ-06) | Frank Pallone, Jr. (D) | 202-225-4671 | 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 19) | Joe Vitale (Democratic) | 732-855-7441 | 79% |
| State Senator (State Senate District 12) | Owen Henry (R) | 732-607-7580 | 21% |
| Assembly Member (Assembly District 19) | Craig Coughlin (Democratic) | 732-855-7441 | 79% |
| Assembly Member (Assembly District 19) | Yvonne Lopez (Democratic) | 732-638-5057 | 79% |
| Assembly Member (Assembly District 12) | Alex Sauickie (R) | 609-758-0205 | 21% |
| Assembly Member (Assembly District 12) | Rob Clifton (R) | 732-970-6386 | 21% |
From Wikidata (community-maintained); confirm on the city's website.
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); Mayors: Wikidata (CC0).
Local government
- Sayreville website: http://www.sayreville.com/
- Sayreville laws: search for the Sayreville, New Jersey code of ordinances
- Madison Park laws: search for the Madison Park, New Jersey code of ordinances
- Middlesex County laws: search for the Middlesex County, New Jersey code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 19 | 79% |
| State Senate District 12 | 21% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 19 | 79% |
| Assembly District 12 | 21% |
Voting precincts
21 voting precincts overlap ZIP 08859. 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:08859")
ZIP 08859 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.