ZIP code 62002: Alton, IL
ZIP code 62002 is in Alton (82% of residents) and Godfrey (9.5%), in Madison County (99%) and Macoupin County (0.8%), Illinois. 8.9% of its residents live outside city limits. It is in Illinois's 13th congressional district (80%) and Illinois's 15th congressional district (20%). Its state senate districts are State Senate District 56 (84%) and State Senate District 50 (16%); its state house districts are State House District 111 (84%) and State House District 100 (16%).
See it on the mapAll of Illinois
City and county
| City or town | Share of ZIP residents |
|---|---|
| Alton | 82% |
| Godfrey | 9.5% |
| County | Share of ZIP residents |
|---|---|
| Madison County | 99% |
| Macoupin County | 0.8% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Alton township | 82% |
| Godfrey village | 9.5% |
| Foster township | 7.9% |
| Brighton township | 0.8% |
| Wood River township | 0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Illinois's 13th congressional district (IL-13) | 80% |
| Illinois's 15th congressional district (IL-15) | 20% |
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.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 56 | 84% |
| State Senate District 50 | 16% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 111 | 84% |
| State House District 100 | 16% |
Voting precincts
29 voting precincts overlap ZIP 62002. 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:62002")
ZIP 62002 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.