Northbrook, Illinois
Northbrook is a village in Cook County, Illinois, with 35,249 residents in 2020. It spans 2 congressional districts: IL-10 (92%) and IL-09 (7.9%). It spans 2 state senate and 3 state house districts.
County
| County | Share of residents |
|---|---|
| Cook County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Illinois's 10th congressional district (IL-10) | 92% |
| Illinois's 9th congressional district (IL-09) | 7.9% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-10) | Bradley Scott Schneider (D) | 202-225-4835 | 92% |
| U.S. Representative (IL-09) | Janice D. Schakowsky (D) | 202-225-2111 | 7.9% |
| 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 29) | Julie Morrison (Democratic) | 847-945-5200 | 85% |
| State Senator (State Senate District 9) | Laura Fine (Democratic) | 847-998-1717 | 15% |
| State Representative (State House District 57) | Tracy Katz Muhl (Democratic) | 847-715-9055 | 78% |
| State Representative (State House District 17) | Jen Gong-Gershowitz (Democratic) | 847-486-8810 | 15% |
| State Representative (State House District 58) | Bob Morgan (Democratic) | 847-780-8471 | 7.6% |
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
- Northbrook website: http://www.northbrook.il.us/
- Northbrook laws: search for the Northbrook, Illinois code of ordinances
- Cook County website: https://www.cookcountyil.gov/
- Cook County laws: search for the Cook County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 29 | 85% |
| State Senate District 9 | 15% |
| State house district | Share of residents |
|---|---|
| State House District 57 | 78% |
| State House District 17 | 15% |
| State House District 58 | 7.6% |
ZIP codes
Percentages mark ZIPs only partly in Northbrook: the share of that ZIP's residents living in it.
- 60062 (82%)
Get this in your AI agent
Your agent can get Northbrook'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:1753481")
Northbrook 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.