ZIP code 45503: Springfield, OH
ZIP code 45503 is in Springfield (68% of residents) and Northridge (20%), in Clark County, Ohio. 12% of its residents live outside city limits. 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
| City or town | Share of ZIP residents |
|---|---|
| Springfield | 68% |
| Northridge | 20% |
| County | Share of ZIP residents |
|---|---|
| Clark County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Springfield city | 68% |
| Moorefield township | 27% |
| Springfield township | 5.0% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Ohio's 4th congressional district (OH-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Rob Rue | 68% | |
| U.S. Representative (OH-04) | Jim Jordan (R) | 202-225-2676 | 100% |
| U.S. Senator | Bernie Moreno (R) | 202-224-2315 | statewide |
| U.S. Senator | Jon Husted (R) | 202-224-3353 | statewide |
| State Senator (State Senate District 10) | Kyle Koehler (R) | 100% | |
| State Representative (State House District 74) | Bernie Willis (R) | 100% |
From Wikidata (community-maintained); confirm on the city's website.
Elected in 2024 under OH's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).
Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0); Mayors: Wikidata (CC0).
Local government
- Springfield website: https://springfieldohio.gov/
- Springfield laws: search for the Springfield, Ohio code of ordinances
- Northridge laws: search for the Northridge, Ohio code of ordinances
- Clark County website: http://www.clarkcountyohio.gov
- Clark County laws: search for the Clark County, Ohio code of ordinances
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
24 voting precincts overlap ZIP 45503. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:45503")
ZIP 45503 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.