Boundary Atlas

ZIP code 12151: Round Lake, NY

ZIP code 12151 is in Round Lake (86% of residents), in Saratoga County, New York. 14% of its residents live outside city limits. It is in New York's 20th congressional district. Its state senate district is State Senate District 44; its state house districts are Assembly District 113 (86%) and Assembly District 112 (14%).

957residents (2020 Census)
2.6 sq miland area
1cities and towns
1congressional district
4voting precincts

See it on the mapAll of New York

City and county

City or townShare of ZIP residents
Round Lake86%

CountyShare of ZIP residents
Saratoga County100%

Town or county subdivisionShare of ZIP residents
Malta town86%
Clifton Park town8.9%
Halfmoon town4.8%

Congressional district

Congressional districtShare of ZIP residents
New York's 20th congressional district (NY-20)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 44100%

State house districtShare of ZIP residents
Assembly District 11386%
Assembly District 11214%

Voting precincts

4 voting precincts overlap ZIP 12151. Map them, with each precinct's share of the ZIP's residents.

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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:12151")

ZIP 12151 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.