ZIP code 60439: Lemont, IL
ZIP code 60439 is in Lemont (73% of residents), in Cook County (92%), DuPage County (6.2%) and Will County (1.6%), Illinois. 27% of its residents live outside city limits. It is in Illinois's 1st congressional district (51%), Illinois's 11th congressional district (49%) and Illinois's 14th congressional district (<0.1%). Its state senate districts are State Senate District 41 (98%), State Senate District 19 (1.1%) and State Senate District 43 (0.5%); its state house districts are State House District 82 (98%), State House District 37 (1.1%) and State House District 85 (0.5%).
See it on the mapAll of Illinois
City and county
| City or town | Share of ZIP residents |
|---|---|
| Lemont | 73% |
| Woodridge | 0.9% |
| Homer Glen | 0.4% |
| Palos Park | 0.1% |
| Darien | <0.1% |
| County | Share of ZIP residents |
|---|---|
| Cook County | 92% |
| DuPage County | 6.2% |
| Will County | 1.6% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Lemont township | 92% |
| Downers Grove township | 6.2% |
| Homer township | 1.1% |
| Du Page township | 0.5% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Illinois's 1st congressional district (IL-01) | 51% |
| Illinois's 11th congressional district (IL-11) | 49% |
| Illinois's 14th congressional district (IL-14) | <0.1% |
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-01) | Jonathan L. Jackson (D) | 202-225-4372 | 51% |
| U.S. Representative (IL-11) | Bill Foster (D) | 202-225-3515 | 49% |
| U.S. Representative (IL-14) | Lauren Underwood (D) | 202-225-2976 | <0.1% |
| 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 41) | John Curran (R) | 630-297-8058 | 98% |
| State Senator (State Senate District 19) | Mike Hastings (Democratic) | 1.1% | |
| State Senator (State Senate District 43) | Rachel Ventura (Democratic) | 331-290-0443 | 0.5% |
| State Representative (State House District 82) | Nicole La Ha (R) | 630-755-4296 | 98% |
| State Representative (State House District 37) | Patrick Sheehan (R) | 708-694-2032 | 1.1% |
| State Representative (State House District 85) | Dee Avelar (Democratic) | 815-372-0085 | 0.5% |
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
- Lemont laws: search for the Lemont, Illinois code of ordinances
- Cook County website: https://www.cookcountyil.gov/
- Cook County laws: search for the Cook County, Illinois code of ordinances
- DuPage County website: https://www.dupagecounty.gov/
- DuPage County laws: search for the DuPage County, Illinois code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 41 | 98% |
| State Senate District 19 | 1.1% |
| State Senate District 43 | 0.5% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 82 | 98% |
| State House District 37 | 1.1% |
| State House District 85 | 0.5% |
Voting precincts
21 voting precincts overlap ZIP 60439. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:60439")
ZIP 60439 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.