Boundary Atlas

ZIP code 43545: Napoleon, OH

ZIP code 43545 is in Napoleon (64% of residents) and Florida (1.5%), in Henry County (100%) and Defiance County (0.2%), Ohio. 35% of its residents live outside city limits. It is in Ohio's 9th congressional district. Its state senate district is State Senate District 1; its state house districts are State House District 81 (100%) and State House District 82 (0.2%).

13,954residents (2020 Census)
135.0 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
Napoleon64%
Florida1.5%
Ridgeville Corners0.2%

CountyShare of ZIP residents
Henry County100%
Defiance County0.2%

Town or county subdivisionShare of ZIP residents
Napoleon township70%
Harrison township9.0%
Freedom township6.4%
Flatrock township4.9%
Liberty township4.8%
Damascus township2.5%
Ridgeville township1.5%
Monroe township0.8%
Richland township0.2%
Adams township<0.1%

Congressional district

Congressional districtShare of ZIP residents
Ohio's 9th congressional district (OH-09)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1100%

State house districtShare of ZIP residents
State House District 81100%
State House District 820.2%

Voting precincts

19 voting precincts overlap ZIP 43545. Map them, with each precinct's share of the ZIP's residents.

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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:43545")

ZIP 43545 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.