Boundary Atlas

ZIP code 52249: Keystone, IA

ZIP code 52249 is in Keystone (66% of residents), in Benton County, Iowa. 34% of its residents live outside city limits. It is in Iowa's 2nd congressional district. Its state senate district is State Senate District 42; its state house district is State House District 84.

912residents (2020 Census)
49.9 sq miland area
1cities and towns
1congressional district
3voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Keystone66%

CountyShare of ZIP residents
Benton County100%

Town or county subdivisionShare of ZIP residents
Kane township82%
Union township9.5%
Homer township4.3%
Big Grove township3.1%
Iowa township1.0%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 2nd congressional district (IA-02)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 42100%

State house districtShare of ZIP residents
State House District 84100%

Voting precincts

3 voting precincts overlap ZIP 52249. 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:52249")

ZIP 52249 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.