Boundary Atlas

ZIP code 45152: Hamilton, OH

ZIP code 45152 is in Morrow (15% of residents) and Roachester (4.2%), in Warren County, Ohio. 81% of its residents live outside city limits. It is in Ohio's 1st congressional district. Its state senate district is State Senate District 7; its state house districts are State House District 55 (93%) and State House District 56 (7.1%).

13,617residents (2020 Census)
48.7 sq miland area
4cities and towns
1congressional district
18voting precincts

See it on the mapAll of Ohio

City and county

City or townShare of ZIP residents
Morrow15%
Roachester4.2%
Maineville0.9%
South Lebanon0.1%

CountyShare of ZIP residents
Warren County100%

Town or county subdivisionShare of ZIP residents
Hamilton township46%
Salem township38%
Harlan township7.5%
Union township7.1%
Washington township2.2%

Congressional district

Congressional districtShare of ZIP residents
Ohio's 1st congressional district (OH-01)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 7100%

State house districtShare of ZIP residents
State House District 5593%
State House District 567.1%

Voting precincts

18 voting precincts overlap ZIP 45152. 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:45152")

ZIP 45152 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.