Deerfield, Illinois
Deerfield is a village in Lake County (97% of residents) and Cook County (2.6%), Illinois, with 19,196 residents in 2020. It is in Illinois's 10th congressional district. It spans 2 state house districts. Its state senate district is State Senate District 29.
County
| County | Share of residents |
|---|---|
| Lake County | 97% |
| Cook County | 2.6% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Illinois's 10th congressional district (IL-10) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-10) | Bradley Scott Schneider (D) | 202-225-4835 | 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 29) | Julie Morrison (Democratic) | 847-945-5200 | 100% |
| State Representative (State House District 58) | Bob Morgan (Democratic) | 847-780-8471 | 100% |
| State Representative (State House District 57) | Tracy Katz Muhl (Democratic) | 847-715-9055 | 0.2% |
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
- Deerfield website: http://www.waukeganweb.net/
- Deerfield laws: search for the Deerfield, Illinois code of ordinances
- Lake County website: https://www.lakecountyil.gov/
- Lake County laws: search for the Lake County, 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 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 58 | 100% |
| State House District 57 | 0.2% |
ZIP codes
Percentages mark ZIPs only partly in Deerfield: the share of that ZIP's residents living in it.
- 60015 (69%)
Get this in your AI agent
Your agent can get Deerfield'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:1718992")
Deerfield 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.