Boundary Atlas

ZIP code 73503: Lawton, OK

ZIP code 73503 is in Lawton (98% of residents), in Comanche County, Oklahoma. It is in Oklahoma's 4th congressional district. Its state senate districts are State Senate District 32 (82%) and State Senate District 31 (18%); its state house districts are State House District 63 (60%) and State House District 65 (40%).

11,796residents (2020 Census)
74.2 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
Lawton98%

CountyShare of ZIP residents
Comanche County100%

Town or county subdivisionShare of ZIP residents
Fort Sill CCD100%

Congressional district

Congressional districtShare of ZIP residents
Oklahoma's 4th congressional district (OK-04)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 3282%
State Senate District 3118%

State house districtShare of ZIP residents
State House District 6360%
State House District 6540%

Voting precincts

5 voting precincts overlap ZIP 73503. 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:73503")

ZIP 73503 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.