Millbrook, Illinois
Millbrook is a village in Kendall County, Illinois, with 277 residents in 2020. It is in Illinois's 14th congressional district. Its state senate district is State Senate District 38; its state house district is State House District 75.
County
| County | Share of residents |
|---|---|
| Kendall County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Illinois's 14th congressional district (IL-14) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-14) | Lauren Underwood (D) | 202-225-2976 | 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 38) | Sue Rezin (R) | 815-220-8720 | 100% |
| State Representative (State House District 75) | Jed Davis (R) | 331-867-8200 | 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
- Millbrook laws: search for the Millbrook, Illinois code of ordinances
- Kendall County website: https://kendallcountyil.gov
- Kendall County laws: search for the Kendall County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 38 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 75 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Millbrook: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Millbrook'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:1749100")
Millbrook 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.