Algonquin, Illinois
Algonquin is a village in McHenry County (72% of residents) and Kane County (28%), Illinois, with 29,710 residents in 2020. It spans 3 congressional districts: IL-09 (59%), IL-08 (28%) and IL-11 (13%). It spans 3 state senate and 3 state house districts.
County
| County | Share of residents |
|---|---|
| McHenry County | 72% |
| Kane County | 28% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Illinois's 9th congressional district (IL-09) | 59% |
| Illinois's 8th congressional district (IL-08) | 28% |
| Illinois's 11th congressional district (IL-11) | 13% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-09) | Janice D. Schakowsky (D) | 202-225-2111 | 59% |
| U.S. Representative (IL-08) | Raja Krishnamoorthi (D) | 202-225-3711 | 28% |
| U.S. Representative (IL-11) | Bill Foster (D) | 202-225-3515 | 13% |
| 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 26) | Darby Hills (R) | 224-662-4544 | 43% |
| State Senator (State Senate District 33) | Don DeWitte (R) | 847-214-8245 | 43% |
| State Senator (State Senate District 35) | Dave Syverson (R) | 815-987-7555 | 13% |
| State Representative (State House District 52) | Marty McLaughlin (R) | 224-634-8300 | 43% |
| State Representative (State House District 66) | Suzanne Ness (Democratic) | 224-484-8620 | 43% |
| State Representative (State House District 70) | Jeff Keicher (R) | 815-748-3494 | 13% |
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
- Algonquin website: https://www.algonquin.org/
- Algonquin laws: search for the Algonquin, Illinois code of ordinances
- McHenry County website: http://www.co.mchenry.il.us
- McHenry County laws: search for the McHenry County, Illinois code of ordinances
- Kane County website: http://www.countyofkane.org/
- Kane County laws: search for the Kane County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 26 | 43% |
| State Senate District 33 | 43% |
| State Senate District 35 | 13% |
| State house district | Share of residents |
|---|---|
| State House District 52 | 43% |
| State House District 66 | 43% |
| State House District 70 | 13% |
ZIP codes
Percentages mark ZIPs only partly in Algonquin: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Algonquin'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:1700685")
Algonquin 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.