Boundary Atlas

ZIP code 45804: Lima, OH

ZIP code 45804 is in Lima (61% of residents) and Fort Shawnee (1.2%), in Allen County, Ohio. 37% of its residents live outside city limits. It is in Ohio's 4th congressional district. Its state senate district is State Senate District 12; its state house district is State House District 78.

14,573residents (2020 Census)
21.2 sq miland area
3cities and towns
1congressional district
19voting precincts

See it on the mapAll of Ohio

City and county

City or townShare of ZIP residents
Lima61%
Fort Shawnee1.2%
Westminster0.8%

CountyShare of ZIP residents
Allen County100%

Town or county subdivisionShare of ZIP residents
Lima city61%
Bath township22%
Perry township14%
Shawnee township1.6%
Auglaize township0.8%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 12100%

State house districtShare of ZIP residents
State House District 78100%

Voting precincts

19 voting precincts overlap ZIP 45804. 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:45804")

ZIP 45804 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.