Boundary Atlas

ZIP code 43136: Lithopolis, OH

ZIP code 43136 is in Lithopolis (93% of residents), in Fairfield County, Ohio. 6.8% of its residents live outside city limits. It is in Ohio's 12th congressional district. Its state senate district is State Senate District 20; its state house district is State House District 69.

1,977residents (2020 Census)
1.2 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
Lithopolis93%

CountyShare of ZIP residents
Fairfield County100%

Town or county subdivisionShare of ZIP residents
Bloom township100%

Congressional district

Congressional districtShare of ZIP residents
Ohio's 12th congressional district (OH-12)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 20100%

State house districtShare of ZIP residents
State House District 69100%

Voting precincts

3 voting precincts overlap ZIP 43136. 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:43136")

ZIP 43136 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.