ZIP code 61088: Winnebago, IL
ZIP code 61088 is in Winnebago (49% of residents) and Westlake Village (25%), in Winnebago County (100%) and Ogle County (0.2%), Illinois. 26% of its residents live outside city limits. It is in Illinois's 17th congressional district (66%) and Illinois's 16th congressional district (34%). Its state senate district is State Senate District 45; its state house districts are State House District 89 (99%) and State House District 90 (0.8%).
See it on the mapAll of Illinois
City and county
| City or town | Share of ZIP residents |
|---|---|
| Winnebago | 49% |
| Westlake Village | 25% |
| County | Share of ZIP residents |
|---|---|
| Winnebago County | 100% |
| Ogle County | 0.2% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Winnebago township | 63% |
| Pecatonica township | 23% |
| Burritt township | 8.9% |
| Seward township | 3.9% |
| Harrison township | 0.8% |
| Leaf River township | 0.1% |
| Byron township | 0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Illinois's 17th congressional district (IL-17) | 66% |
| Illinois's 16th congressional district (IL-16) | 34% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-17) | Eric Sorensen (D) | 202-225-5905 | 66% |
| U.S. Representative (IL-16) | Darin LaHood (R) | 202-225-6201 | 34% |
| 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 89) | Tony McCombie (R) | 815-291-8989 | 99% |
| State Representative (State House District 90) | John Cabello (R) | 815-974-0090 | 0.8% |
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
- Winnebago website: http://www.villageofwinnebago.com/
- Winnebago laws: search for the Winnebago, Illinois code of ordinances
- Westlake Village laws: search for the Westlake Village, Illinois code of ordinances
- Winnebago County laws: search for the Winnebago County, Illinois code of ordinances
- Ogle County website: http://www.oglecounty.org
- Ogle County laws: search for the Ogle County, Illinois code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 45 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 89 | 99% |
| State House District 90 | 0.8% |
Voting precincts
11 voting precincts overlap ZIP 61088. Map them, with each precinct's share of the ZIP's residents.
Get this in your AI agent
Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:61088")
ZIP 61088 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.