Boundary Atlas

ZIP code 11791: Syosset, NY

ZIP code 11791 is in Syosset (74% of residents), Muttontown (8.4%), Hicksville (6.8%), Laurel Hollow (6.7%) and Oyster Bay Cove (3.5%), in Nassau County, New York. It is in New York's 3rd congressional district. Its state senate districts are State Senate District 7 (87%) and State Senate District 5 (13%); its state house districts are Assembly District 15 (80%) and Assembly District 13 (20%).

25,879residents (2020 Census)
12.5 sq miland area
7cities and towns
1congressional district
26voting precincts

See it on the mapAll of New York

City and county

City or townShare of ZIP residents
Syosset74%
Muttontown8.4%
Hicksville6.8%
Laurel Hollow6.7%
Oyster Bay Cove3.5%
Plainview0.2%
Woodbury<0.1%

CountyShare of ZIP residents
Nassau County100%

Town or county subdivisionShare of ZIP residents
Oyster Bay town100%

Congressional district

Congressional districtShare of ZIP residents
New York's 3rd congressional district (NY-03)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NY-03)Thomas R. Suozzi (D)202-225-3335100%
U.S. SenatorCharles E. Schumer (D)202-224-6542 · contact formstatewide
U.S. SenatorKirsten E. Gillibrand (D)202-224-4451 · contact formstatewide
State Senator (State Senate District 7)Jack Martins (Republican/Conservative)516-922-181187%
State Senator (State Senate District 5)Steve Rhoads (Republican/Conservative)516-882-063013%
Assembly Member (Assembly District 15)Jake Blumencranz (Republican/Conservative)516-937-357180%
Assembly Member (Assembly District 13)Charles Lavine (Democratic)516-676-005020%

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 787%
State Senate District 513%

State house districtShare of ZIP residents
Assembly District 1580%
Assembly District 1320%

Voting precincts

26 voting precincts overlap ZIP 11791. Map them, with each precinct's share of the ZIP's residents.

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ZIP 11791 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.