ZIP code 62890 is in Thompsonville (18% of residents), in Franklin County (70%), Williamson County (20%), Hamilton County (7.8%) and Saline County (2.4%), Illinois. 82% of its residents live outside city limits. It is in Illinois's 12th congressional district. Its state senate district is State Senate District 59; its state house district is State House District 117.
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).
11 voting precincts overlap ZIP 62890.
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:62890")
ZIP 62890 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.