Elgin, Illinois
Elgin is a city in Kane County (79% of residents) and Cook County (21%), Illinois, with 114,862 residents in 2020. It spans 3 congressional districts: IL-08 (79%), IL-03 (16%) and IL-11 (4.5%). It spans 3 state senate and 4 state house districts.
County
| County | Share of residents |
|---|---|
| Kane County | 79% |
| Cook County | 21% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Illinois's 8th congressional district (IL-08) | 79% |
| Illinois's 3rd congressional district (IL-03) | 16% |
| Illinois's 11th congressional district (IL-11) | 4.5% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Dave Kaptain | citywide | |
| U.S. Representative (IL-08) | Raja Krishnamoorthi (D) | 202-225-3711 | 79% |
| U.S. Representative (IL-03) | Delia C. Ramirez (D) | 202-225-5701 | 16% |
| U.S. Representative (IL-11) | Bill Foster (D) | 202-225-3515 | 4.5% |
| 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 22) | Cristina Castro (Democratic) | 847-214-8864 | 63% |
| State Senator (State Senate District 33) | Don DeWitte (R) | 847-214-8245 | 32% |
| State Senator (State Senate District 25) | Karina Villa (Democratic) | 630-326-9319 | 5.1% |
| State Representative (State House District 43) | Anna Moeller (Democratic) | 847-841-7130 | 63% |
| State Representative (State House District 66) | Suzanne Ness (Democratic) | 224-484-8620 | 22% |
| State Representative (State House District 65) | Dan Ugaste (R) | 630-797-5530 | 10% |
| State Representative (State House District 49) | Maura Hirschauer (Democratic) | 331-465-9661 | 5.1% |
From Wikidata (community-maintained); confirm on the city's website.
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); Mayors: Wikidata (CC0).
Local government
- Elgin website: https://www.cityofelgin.org/
- Elgin laws: search for the Elgin, Illinois code of ordinances
- Kane County website: http://www.countyofkane.org/
- Kane County laws: search for the Kane 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 22 | 63% |
| State Senate District 33 | 32% |
| State Senate District 25 | 5.1% |
| State house district | Share of residents |
|---|---|
| State House District 43 | 63% |
| State House District 66 | 22% |
| State House District 65 | 10% |
| State House District 49 | 5.1% |
ZIP codes
Percentages mark ZIPs only partly in Elgin: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Elgin'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:1723074")
Elgin 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.