ZIP code 45501: Springfield, OH
ZIP code 45501 is in Clark County, Ohio, outside any city or Census-designated place. It is in Ohio's 4th congressional district. Its state senate district is State Senate District 10; its state house district is State House District 74.
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Clark County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Springfield city | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Ohio's 4th congressional district (OH-04) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 10 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 74 | 100% |
Voting precincts
1 voting precinct overlap ZIP 45501. 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:45501")
ZIP 45501 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.