Darien, Illinois
Darien is a city in DuPage County, Illinois, with 22,011 residents in 2020. It spans 2 congressional districts: IL-06 (86%) and IL-11 (14%). It spans 2 state senate and 3 state house districts.
County
| County | Share of residents |
|---|---|
| DuPage County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Illinois's 6th congressional district (IL-06) | 86% |
| Illinois's 11th congressional district (IL-11) | 14% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-06) | Sean Casten (D) | 202-225-4561 | 86% |
| U.S. Representative (IL-11) | Bill Foster (D) | 202-225-3515 | 14% |
| 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 41) | John Curran (R) | 630-297-8058 | 98% |
| State Senator (State Senate District 23) | Suzy Glowiak Hilton (Democratic) | 630-785-3177 | 1.9% |
| State Representative (State House District 82) | Nicole La Ha (R) | 630-755-4296 | 82% |
| State Representative (State House District 81) | Anne Stava (Democratic) | 630-605-0595 | 16% |
| State Representative (State House District 45) | Marti Deuter (Democratic) | 630-413-1080 | 1.9% |
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
- Darien website: http://www.darien.il.us/
- Darien laws: search for the Darien, Illinois code of ordinances
- DuPage County website: https://www.dupagecounty.gov/
- DuPage County laws: search for the DuPage County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 41 | 98% |
| State Senate District 23 | 1.9% |
| State house district | Share of residents |
|---|---|
| State House District 82 | 82% |
| State House District 81 | 16% |
| State House District 45 | 1.9% |
ZIP codes
Percentages mark ZIPs only partly in Darien: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Darien'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:1718628")
Darien 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.