Boundary Atlas

ZIP code 12901: Plattsburgh, NY

ZIP code 12901 is in Plattsburgh (57% of residents), Cumberland Head (5.4%) and Plattsburgh West (4.3%), in Clinton County, New York. 34% of its residents live outside city limits. It is in New York's 21st congressional district. Its state senate district is State Senate District 45; its state house district is Assembly District 115.

32,147residents (2020 Census)
70.6 sq miland area
5cities and towns
1congressional district
25voting precincts

See it on the mapAll of New York

City and county

City or townShare of ZIP residents
Plattsburgh57%
Cumberland Head5.4%
Plattsburgh West4.3%
Parc0.3%
Morrisonville0.2%

CountyShare of ZIP residents
Clinton County100%

Town or county subdivisionShare of ZIP residents
Plattsburgh city57%
Plattsburgh town28%
Beekmantown town7.8%
Schuyler Falls town4.3%
Peru town3.3%

Congressional district

Congressional districtShare of ZIP residents
New York's 21st congressional district (NY-21)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 45100%

State house districtShare of ZIP residents
Assembly District 115100%

Voting precincts

25 voting precincts overlap ZIP 12901. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:12901")

ZIP 12901 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.