Boundary Atlas

ZIP code 43340: Mount Victory, OH

ZIP code 43340 is in Mount Victory (34% of residents), in Hardin County (88%) and Union County (12%), Ohio. 66% of its residents live outside city limits. It is in Ohio's 4th congressional district. Its state senate districts are State Senate District 1 (88%) and State Senate District 26 (12%); its state house districts are State House District 83 (88%) and State House District 86 (12%).

1,754residents (2020 Census)
48.7 sq miland area
1cities and towns
1congressional district
3voting precincts

See it on the mapAll of Ohio

City and county

City or townShare of ZIP residents
Mount Victory34%

CountyShare of ZIP residents
Hardin County88%
Union County12%

Town or county subdivisionShare of ZIP residents
Hale township58%
Dudley township29%
Washington township12%

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 188%
State Senate District 2612%

State house districtShare of ZIP residents
State House District 8388%
State House District 8612%

Voting precincts

3 voting precincts overlap ZIP 43340. 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:43340")

ZIP 43340 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.