Boundary Atlas

Mahopac, New York

Mahopac is a Census-designated place (an unincorporated community) in Putnam County, New York, with 8,932 residents in 2020. It is in New York's 17th congressional district. Its state senate district is State Senate District 40; its state house district is Assembly District 94.

8,932residents (2020 Census)
6.1 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Putnam County100%

Congressional district

Congressional districtShare of residents
New York's 17th congressional district (NY-17)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (NY-17)Michael Lawler (R)202-225-6506100%
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 40)Pete Harckham (Democratic/Working Families)914-241-4600100%
Assembly Member (Assembly District 94)Matt Slater (Republican/Conservative)845-278-2923100%

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 40100%

State house districtShare of residents
Assembly District 94100%

ZIP codes

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

Get this in your AI agent

Your agent can get Mahopac'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:3644534")

Mahopac 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.