ZIP code 62458: St. Elmo, IL
ZIP code 62458 is in St. Elmo (58% of residents), in Fayette County (97%) and Effingham County (2.9%), Illinois. 42% of its residents live outside city limits. It is in Illinois's 15th congressional district (97%) and Illinois's 12th congressional district (2.9%). Its state senate district is State Senate District 55; its state house district is State House District 110.
See it on the mapAll of Illinois
City and county
| City or town | Share of ZIP residents |
|---|---|
| St. Elmo | 58% |
| County | Share of ZIP residents |
|---|---|
| Fayette County | 97% |
| Effingham County | 2.9% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Avena township | 86% |
| Wheatland township | 7.8% |
| West township | 2.9% |
| Loudon township | 2.5% |
| Sefton township | 1.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Illinois's 15th congressional district (IL-15) | 97% |
| Illinois's 12th congressional district (IL-12) | 2.9% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-15) | Mary E. Miller (R) | 202-225-5271 | 97% |
| U.S. Representative (IL-12) | Mike Bost (R) | 202-225-5661 | 2.9% |
| U.S. Senator | Richard J. Durbin (D) | 202-224-2152 · contact form | statewide |
| U.S. Senator | Tammy Duckworth (D) | 202-224-2854 · contact form | statewide |
| State Senator (State Senate District 55) | Jason Plummer (R) | 618-283-3000 | 100% |
| State Representative (State House District 110) | Blaine Wilhour (R) | 100% |
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).
Local government
- St. Elmo laws: search for the St. Elmo, Illinois code of ordinances
- Fayette County website: http://www.fayettecountyillinois.org
- Fayette County laws: search for the Fayette County, Illinois code of ordinances
- Effingham County website: http://www.co.effingham.il.us
- Effingham County laws: search for the Effingham County, Illinois code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 55 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 110 | 100% |
Voting precincts
5 voting precincts overlap ZIP 62458. 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:62458")
ZIP 62458 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.