Somonauk, Illinois
Somonauk is a village in DeKalb County (87% of residents) and LaSalle County (13%), Illinois, with 1,798 residents in 2020. It is in Illinois's 14th congressional district. It spans 2 state senate and 2 state house districts.
County
| County | Share of residents |
|---|---|
| DeKalb County | 87% |
| LaSalle County | 13% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Illinois's 14th congressional district (IL-14) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-14) | Lauren Underwood (D) | 202-225-2976 | 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 38) | Sue Rezin (R) | 815-220-8720 | 91% |
| State Senator (State Senate District 35) | Dave Syverson (R) | 815-987-7555 | 9.0% |
| State Representative (State House District 75) | Jed Davis (R) | 331-867-8200 | 91% |
| State Representative (State House District 70) | Jeff Keicher (R) | 815-748-3494 | 9.0% |
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
- Somonauk website: https://www.vil.somonauk.il.us/
- Somonauk laws: search for the Somonauk, Illinois code of ordinances
- DeKalb County website: http://dekalbcounty.org/
- DeKalb County laws: search for the DeKalb County, Illinois code of ordinances
- LaSalle County website: https://lasallecountyil.gov/
- LaSalle County laws: search for the LaSalle County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 38 | 91% |
| State Senate District 35 | 9.0% |
| State house district | Share of residents |
|---|---|
| State House District 75 | 91% |
| State House District 70 | 9.0% |
ZIP codes
Percentages mark ZIPs only partly in Somonauk: the share of that ZIP's residents living in it.
- 60552 (41%)
Get this in your AI agent
Your agent can get Somonauk'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:1770460")
Somonauk 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.