ZIP code 11755: Lake Grove, NY

ZIP code 11755 is in Lake Grove (91% of residents) and Lake Ronkonkoma (8.3%), in Suffolk County, New York. It is in New York's 1st congressional district. Its state senate districts are State Senate District 3 (96%) and State Senate District 2 (4.3%); its state house districts are Assembly District 5 (96%) and Assembly District 8 (4.3%).

12,118residents (2020 Census)

3.3 sq miland area

4cities and towns

1congressional district

13voting precincts

See it on the map All of New York

City and county

City or town	Share of ZIP residents
Lake Grove	91%
Lake Ronkonkoma	8.3%
Centereach	0.2%
St. James	0.1%

County	Share of ZIP residents
Suffolk County	100%

Town or county subdivision	Share of ZIP residents
Brookhaven town	96%
Smithtown town	4.3%

Congressional district

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

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (NY-01)	Nick LaLota (R)	202-225-3826	100%
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 3)	Dean Murray (Republican/Conservative)	631-360-3356	96%
State Senator (State Senate District 2)	Mario Mattera (Republican/Conservative)	631-361-2154	4.3%
Assembly Member (Assembly District 5)	Doug Smith (R)	631-585-0230	96%
Assembly Member (Assembly District 8)	Mike Fitzpatrick (R)	631-724-2929	4.3%

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

Lake Grove website: http://www.lakegroveny.gov
Lake Grove laws: search for the Lake Grove, New York code of ordinances
Lake Ronkonkoma laws: search for the Lake Ronkonkoma, New York code of ordinances
Suffolk County website: https://suffolkcountyny.gov/
Suffolk County laws: search for the Suffolk County, New York code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 3	96%
State Senate District 2	4.3%

State house district	Share of ZIP residents
Assembly District 5	96%
Assembly District 8	4.3%

Voting precincts

13 voting precincts overlap ZIP 11755. Map them, with each precinct's share of the ZIP's residents.

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ZIP 11755 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.