South Beloit, Illinois
South Beloit is a city in Winnebago County, Illinois, with 7,999 residents in 2020. It is in Illinois's 16th congressional district. Its state senate district is State Senate District 45; its state house district is State House District 90.
County
| County | Share of residents |
|---|---|
| Winnebago County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Illinois's 16th congressional district (IL-16) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-16) | Darin LaHood (R) | 202-225-6201 | 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 45) | Andrew Chesney (R) | 815-232-0774 | 100% |
| State Representative (State House District 90) | John Cabello (R) | 815-974-0090 | 100% |
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
- South Beloit website: http://www.southbeloit.org
- South Beloit laws: search for the South Beloit, Illinois code of ordinances
- Winnebago County laws: search for the Winnebago County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 45 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 90 | 100% |
ZIP codes
Percentages mark ZIPs only partly in South Beloit: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get South Beloit'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:1770590")
South Beloit 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.