Dupo, Illinois
Dupo is a village in St. Clair County (100% of residents) and Monroe County (0.1%), Illinois, with 3,996 residents in 2020. It spans 2 congressional districts: IL-13 (94%) and IL-12 (6.0%). It spans 2 state senate and 2 state house districts.
County
| County | Share of residents |
|---|---|
| St. Clair County | 100% |
| Monroe County | 0.1% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Illinois's 13th congressional district (IL-13) | 94% |
| Illinois's 12th congressional district (IL-12) | 6.0% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-13) | Nikki Budzinski (D) | 202-225-2371 | 94% |
| U.S. Representative (IL-12) | Mike Bost (R) | 202-225-5661 | 6.0% |
| 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 57) | Christopher Belt (Democratic) | 618-875-1212 | 100% |
| State Senator (State Senate District 58) | Terri Bryant (R) | 618-472-8158 | 0.1% |
| State Representative (State House District 114) | Kevin Schmidt (R) | 618-215-1050 | 100% |
| State Representative (State House District 115) | David Friess (R) | 618-282-7284 | 0.1% |
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
- Dupo laws: search for the Dupo, Illinois code of ordinances
- St. Clair County laws: search for the St. Clair County, Illinois code of ordinances
- Monroe County website: http://www.monroecountyil.org
- Monroe County laws: search for the Monroe County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 57 | 100% |
| State Senate District 58 | 0.1% |
| State house district | Share of residents |
|---|---|
| State House District 114 | 100% |
| State House District 115 | 0.1% |
ZIP codes
Percentages mark ZIPs only partly in Dupo: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Dupo's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:1721254")
Dupo 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.