Boundary Atlas

ZIP code 72845: Knoxville, AR

ZIP code 72845 is in Knoxville (54% of residents), in Johnson County, Arkansas. 46% of its residents live outside city limits. It is in Arkansas's 4th congressional district. Its state senate district is State Senate District 26; its state house district is State House District 45.

1,116residents (2020 Census)
11.1 sq miland area
1cities and towns
1congressional district
1voting precincts

See it on the mapAll of Arkansas

City and county

City or townShare of ZIP residents
Knoxville54%

CountyShare of ZIP residents
Johnson County100%

Town or county subdivisionShare of ZIP residents
Howell township100%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (AR-04)Bruce Westerman (R)202-225-3772100%
U.S. SenatorJohn Boozman (R)202-224-4843 · contact formstatewide
U.S. SenatorTom Cotton (R)202-224-2353 · contact formstatewide
State Senator (State Senate District 26)Brad Simon (R)100%
State Representative (State House District 45)Aaron Pilkington (R)479-308-8384100%

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 26100%

State house districtShare of ZIP residents
State House District 45100%

Voting precincts

1 voting precinct overlap ZIP 72845. 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:72845")

ZIP 72845 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.