Boundary Atlas

ZIP code 45871: New Knoxville, OH

ZIP code 45871 is in New Knoxville (47% of residents), in Auglaize County (79%) and Shelby County (21%), Ohio. 53% 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 districts are State House District 84 (79%) and State House District 85 (21%).

2,019residents (2020 Census)
23.6 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of Ohio

City and county

City or townShare of ZIP residents
New Knoxville47%

CountyShare of ZIP residents
Auglaize County79%
Shelby County21%

Town or county subdivisionShare of ZIP residents
Washington township73%
Van Buren township21%
St. Marys township6.1%

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 8479%
State House District 8521%

Voting precincts

5 voting precincts overlap ZIP 45871. 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:45871")

ZIP 45871 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.