Boundary Atlas

ZIP code 74820: Ada, OK

ZIP code 74820 is in Ada (52% of residents), Latta (4.6%), Byng (4.4%) and Pickett (2.5%), in Pontotoc County, Oklahoma. 37% of its residents live outside city limits. It is in Oklahoma's 4th congressional district. Its state senate district is State Senate District 13; its state house district is State House District 25.

31,630residents (2020 Census)
285.6 sq miland area
5cities and towns
1congressional district
17voting precincts

See it on the mapAll of Oklahoma

City and county

City or townShare of ZIP residents
Ada52%
Latta4.6%
Byng4.4%
Pickett2.5%
Vanoss0.5%

CountyShare of ZIP residents
Pontotoc County100%

Town or county subdivisionShare of ZIP residents
Ada CCD75%
Northwest Pontotoc CCD13%
Northeast Pontotoc CCD11%
Southeast Pontotoc CCD1.0%
South Central Pontotoc CCD0.4%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (OK-04)Tom Cole (R)202-225-6165100%
U.S. SenatorAlan Armstrong (R)202-224-4721statewide
U.S. SenatorJames Lankford (R)202-224-5754 · contact formstatewide
State Senator (State Senate District 13)Jonathan Wingard (R)100%
State Representative (State House District 25)Ronny Johns (R)100%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 13100%

State house districtShare of ZIP residents
State House District 25100%

Voting precincts

17 voting precincts overlap ZIP 74820. 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:

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ZIP 74820 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.