Boundary Atlas

ZIP code 13630: DeKalb Junction, NY

ZIP code 13630 is in DeKalb Junction (33% of residents), in St. Lawrence County, New York. 67% of its residents live outside city limits. It is in New York's 21st congressional district. Its state senate districts are State Senate District 49 (88%) and State Senate District 45 (12%); its state house districts are Assembly District 117 (88%) and Assembly District 116 (12%).

1,486residents (2020 Census)
45.8 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
DeKalb Junction33%

CountyShare of ZIP residents
St. Lawrence County100%

Town or county subdivisionShare of ZIP residents
De Kalb town86%
Canton town12%
Hermon town1.5%

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 4988%
State Senate District 4512%

State house districtShare of ZIP residents
Assembly District 11788%
Assembly District 11612%

Voting precincts

4 voting precincts overlap ZIP 13630. 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:13630")

ZIP 13630 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.