Rockford, Illinois
Rockford is a city in Winnebago County, Illinois, with 149,073 residents in 2020. It spans 2 congressional districts: IL-17 (87%) and IL-16 (13%). It spans 3 state senate and 4 state house districts.
County
| County | Share of residents |
|---|---|
| Winnebago County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Illinois's 17th congressional district (IL-17) | 87% |
| Illinois's 16th congressional district (IL-16) | 13% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Thomas McNamara | citywide | |
| U.S. Representative (IL-17) | Eric Sorensen (D) | 202-225-5905 | 87% |
| U.S. Representative (IL-16) | Darin LaHood (R) | 202-225-6201 | 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 34) | Steve Stadelman (Democratic) | 815-987-7557 | 95% |
| State Senator (State Senate District 35) | Dave Syverson (R) | 815-987-7555 | 3.8% |
| State Senator (State Senate District 45) | Andrew Chesney (R) | 815-232-0774 | 1.3% |
| State Representative (State House District 67) | Maurice West (Democratic) | 815-987-7433 | 49% |
| State Representative (State House District 68) | Dave Vella (Democratic) | 815-329-6741 | 46% |
| State Representative (State House District 69) | Joe Sosnowski (R) | 815-547-3436 | 3.8% |
| State Representative (State House District 90) | John Cabello (R) | 815-974-0090 | 1.3% |
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
- Rockford website: https://rockfordil.gov/
- Rockford laws: search for the Rockford, 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 34 | 95% |
| State Senate District 35 | 3.8% |
| State Senate District 45 | 1.3% |
| State house district | Share of residents |
|---|---|
| State House District 67 | 49% |
| State House District 68 | 46% |
| State House District 69 | 3.8% |
| State House District 90 | 1.3% |
ZIP codes
Percentages mark ZIPs only partly in Rockford: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Rockford'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:1765000")
Rockford 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.