Markham, Illinois
Markham is a city in Cook County, Illinois, with 11,661 residents in 2020. It spans 2 congressional districts: IL-02 (71%) and IL-01 (29%). It spans 2 state senate and 2 state house districts.
County
| County | Share of residents |
|---|---|
| Cook County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Illinois's 2nd congressional district (IL-02) | 71% |
| Illinois's 1st congressional district (IL-01) | 29% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-02) | Robin L. Kelly (D) | 202-225-0773 | 71% |
| U.S. Representative (IL-01) | Jonathan L. Jackson (D) | 202-225-4372 | 29% |
| 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 15) | Napoleon Harris (Democratic) | 708-893-0552 | 100% |
| State Senator (State Senate District 19) | Mike Hastings (Democratic) | 0.1% | |
| State Representative (State House District 30) | Will Davis (Democratic) | 708-799-7300 | 100% |
| State Representative (State House District 38) | Debbie Meyers-Martin (Democratic) | 708-833-7010 | 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
- Markham website: http://www.cityofmarkham.net/
- Markham laws: search for the Markham, 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 15 | 100% |
| State Senate District 19 | 0.1% |
| State house district | Share of residents |
|---|---|
| State House District 30 | 100% |
| State House District 38 | 0.1% |
ZIP codes
Percentages mark ZIPs only partly in Markham: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Markham'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:1747007")
Markham 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.