ZIP code 11590: Westbury, NY
ZIP code 11590 is in Westbury (33% of residents), New Cassel (30%), Salisbury (26%), Uniondale (4.7%), Jericho (3.0%) and Hicksville (2.1%), in Nassau County, New York. It is in New York's 3rd congressional district (76%) and New York's 4th congressional district (24%). Its state senate districts are State Senate District 6 (68%), State Senate District 5 (29%) and State Senate District 7 (3.2%); its state house districts are Assembly District 13 (66%), Assembly District 19 (27%), Assembly District 17 (6.6%) and Assembly District 15 (0.2%).
See it on the mapAll of New York
City and county
| City or town | Share of ZIP residents |
|---|---|
| Westbury | 33% |
| New Cassel | 30% |
| Salisbury | 26% |
| Uniondale | 4.7% |
| Jericho | 3.0% |
| Hicksville | 2.1% |
| Carle Place | 1.0% |
| Old Westbury | <0.1% |
| County | Share of ZIP residents |
|---|---|
| Nassau County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| North Hempstead town | 64% |
| Hempstead town | 31% |
| Oyster Bay town | 5.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| New York's 3rd congressional district (NY-03) | 76% |
| New York's 4th congressional district (NY-04) | 24% |
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 (NY-03) | Thomas R. Suozzi (D) | 202-225-3335 | 76% |
| U.S. Representative (NY-04) | Laura Gillen (D) | 202-225-5516 | 24% |
| U.S. Senator | Charles E. Schumer (D) | 202-224-6542 · contact form | statewide |
| U.S. Senator | Kirsten E. Gillibrand (D) | 202-224-4451 · contact form | statewide |
| State Senator (State Senate District 6) | Siela Bynoe (Democratic) | 516-739-1700 | 68% |
| State Senator (State Senate District 5) | Steve Rhoads (Republican/Conservative) | 516-882-0630 | 29% |
| State Senator (State Senate District 7) | Jack Martins (Republican/Conservative) | 516-922-1811 | 3.2% |
| Assembly Member (Assembly District 13) | Charles Lavine (Democratic) | 516-676-0050 | 66% |
| Assembly Member (Assembly District 19) | Ed Ra (R) | 516-535-4095 | 27% |
| Assembly Member (Assembly District 17) | John Mikulin (R) | 516-228-4960 | 6.6% |
| Assembly Member (Assembly District 15) | Jake Blumencranz (Republican/Conservative) | 516-937-3571 | 0.2% |
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
- Westbury website: https://villageofwestbury.gov
- Westbury laws: search for the Westbury, New York code of ordinances
- New Cassel laws: search for the New Cassel, New York code of ordinances
- Salisbury laws: search for the Salisbury, New York code of ordinances
- Nassau County website: http://www.nassaucountyny.gov
- Nassau County laws: search for the Nassau County, New York code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 6 | 68% |
| State Senate District 5 | 29% |
| State Senate District 7 | 3.2% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 13 | 66% |
| Assembly District 19 | 27% |
| Assembly District 17 | 6.6% |
| Assembly District 15 | 0.2% |
Voting precincts
36 voting precincts overlap ZIP 11590. 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:11590")
ZIP 11590 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.