Boundary Atlas

ZIP code 74643: Lamont, OK

ZIP code 74643 is in Lamont (63% of residents), in Grant County (99%) and Kay County (1.1%), Oklahoma. 37% of its residents live outside city limits. It is in Oklahoma's 3rd congressional district. Its state senate districts are State Senate District 19 (99%) and State Senate District 10 (1.1%); its state house district is State House District 38.

476residents (2020 Census)
116.6 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of Oklahoma

City and county

City or townShare of ZIP residents
Lamont63%

CountyShare of ZIP residents
Grant County99%
Kay County1.1%

Town or county subdivisionShare of ZIP residents
Lamont CCD97%
Medford CCD1.7%
Tonkawa CCD1.1%

Congressional district

Congressional districtShare of ZIP residents
Oklahoma's 3rd congressional district (OK-03)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1999%
State Senate District 101.1%

State house districtShare of ZIP residents
State House District 38100%

Voting precincts

5 voting precincts overlap ZIP 74643. 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:74643")

ZIP 74643 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.