Boundary Atlas

ZIP code 13601: Watertown, NY

ZIP code 13601 is in Watertown (66% of residents), Pamelia Center (1.3%) and Glen Park (1.2%), in Jefferson County (100%) and Lewis County (0.1%), New York. 31% of its residents live outside city limits. It is in New York's 24th congressional district (96%) and New York's 21st congressional district (3.5%). Its state senate district is State Senate District 49; its state house districts are Assembly District 116 (94%) and Assembly District 117 (5.6%).

37,287residents (2020 Census)
140.8 sq miland area
3cities and towns
2congressional districts
26voting precincts

See it on the mapAll of New York

City and county

City or townShare of ZIP residents
Watertown66%
Pamelia Center1.3%
Glen Park1.2%

CountyShare of ZIP residents
Jefferson County100%
Lewis County0.1%

Town or county subdivisionShare of ZIP residents
Watertown city66%
Watertown town16%
Pamelia town7.1%
Le Ray town3.4%
Brownville town3.3%
Rutland town1.9%
Hounsfield town1.6%
Orleans town0.2%
Clayton town0.2%
Pinckney town0.1%
Rodman town0.1%
Champion town<0.1%

Congressional districts

Congressional districtShare of ZIP residents
New York's 24th congressional district (NY-24)96%
New York's 21st congressional district (NY-21)3.5%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

State legislative districts

State senate districtShare of ZIP residents
State Senate District 49100%

State house districtShare of ZIP residents
Assembly District 11694%
Assembly District 1175.6%

Voting precincts

26 voting precincts overlap ZIP 13601. 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:13601")

ZIP 13601 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.