Simpson, Illinois
Simpson is a village in Johnson County, Illinois, with 44 residents in 2020. 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.
County
| County | Share of residents |
|---|---|
| Johnson County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Illinois's 12th congressional district (IL-12) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-12) | Mike Bost (R) | 202-225-5661 | 100% |
| 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 59) | Paul Jacobs (R) | 618-559-7018 | 100% |
| State Representative (State House District 117) | Patrick Windhorst (R) | 618-294-8703 | 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
- Simpson laws: search for the Simpson, Illinois code of ordinances
- Johnson County laws: search for the Johnson County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 59 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 117 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Simpson: the share of that ZIP's residents living in it.
- 62985 (4.9%)
Get this in your AI agent
Your agent can get Simpson's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:1770005")
Simpson here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.