Boundary Atlas

ZIP code 45003: College Corner, OH

ZIP code 45003 is in College Corner (47% of residents), in Preble County (74%) and Butler County (26%), Ohio. 53% of its residents live outside city limits. It is in Ohio's 8th congressional district. Its state senate districts are State Senate District 5 (74%) and State Senate District 4 (26%); its state house districts are State House District 40 (74%) and State House District 47 (26%).

818residents (2020 Census)
15.2 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of Ohio

City and county

City or townShare of ZIP residents
College Corner47%

CountyShare of ZIP residents
Preble County74%
Butler County26%

Town or county subdivisionShare of ZIP residents
Israel township74%
Oxford township26%

Congressional district

Congressional districtShare of ZIP residents
Ohio's 8th congressional district (OH-08)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 574%
State Senate District 426%

State house districtShare of ZIP residents
State House District 4074%
State House District 4726%

Voting precincts

5 voting precincts overlap ZIP 45003. 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:45003")

ZIP 45003 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.