Boundary Atlas

Middle Island, New York

Middle Island is a Census-designated place (an unincorporated community) in Suffolk County, New York, with 10,546 residents in 2020. It is in New York's 1st congressional district. It spans 2 state senate and 3 state house districts.

10,546residents (2020 Census)
8.2 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Suffolk County100%

Congressional district

Congressional districtShare of 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)631-360-335676%
State Senator (State Senate District 1)Tony Palumbo (R)631-461-910024%
Assembly Member (Assembly District 3)Joe DeStefano (Republican/Conservative)631-207-007351%
Assembly Member (Assembly District 2)Jodi Giglio (Republican/Conservative)631-727-020443%
Assembly Member (Assembly District 4)Rebecca Kassay (Democratic)631-751-30946.2%

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

State legislative districts

State senate districtShare of residents
State Senate District 376%
State Senate District 124%

State house districtShare of residents
Assembly District 351%
Assembly District 243%
Assembly District 46.2%

ZIP codes

Percentages mark ZIPs only partly in Middle Island: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Middle Island's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:3646976")

Middle Island here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.