Boundary Atlas

ZIP code 11720: Centereach, NY

ZIP code 11720 is in Centereach (99% of residents), in Suffolk County, New York. It is in New York's 1st congressional district. Its state senate districts are State Senate District 3 (74%) and State Senate District 1 (26%); its state house districts are Assembly District 5 (74%) and Assembly District 4 (26%).

28,623residents (2020 Census)
8.2 sq miland area
3cities and towns
1congressional district
23voting precincts

See it on the mapAll of New York

City and county

City or townShare of ZIP residents
Centereach99%
Selden0.9%
Lake Ronkonkoma0.1%

CountyShare of ZIP residents
Suffolk County100%

Town or county subdivisionShare of ZIP residents
Brookhaven town100%

Congressional district

Congressional districtShare of ZIP residents
New York's 1st congressional district (NY-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NY-01)Nick LaLota (R)202-225-3826100%
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 3)Dean Murray (Republican/Conservative)631-360-335674%
State Senator (State Senate District 1)Tony Palumbo (R)631-461-910026%
Assembly Member (Assembly District 5)Doug Smith (R)631-585-023074%
Assembly Member (Assembly District 4)Rebecca Kassay (Democratic)631-751-309426%

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 374%
State Senate District 126%

State house districtShare of ZIP residents
Assembly District 574%
Assembly District 426%

Voting precincts

23 voting precincts overlap ZIP 11720. Map them, with each precinct's share of the ZIP's residents.

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ZIP 11720 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.