Iroquois County, IL ZIP codes
Iroquois County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Iroquois County ZIP codes
The ZIP codes of Iroquois County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Iroquois County in numbers
About 26,449 people live in Iroquois County, in 11,443 households, the 51st most populous of Illinois's 102 counties. The median household income is $66,255 a year, 21% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $137,800 (48% below the Illinois median), and median gross rent is $799 a month. The median age is 44.4; 18.2% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 25 minutes.
| Population | 26,449 |
|---|---|
| Households | 11,443 |
| Median age | 44.4 |
| Median household income | $66,255 |
| Median home value | $137,800 |
| Median gross rent | $799 |
| Bachelor's degree or higher | 18.2% |
| Mean commute | 25.0 min |
| Population density | 24 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Iroquois County
| Town | ZIP codes | Population |
|---|---|---|
| Watseka | 1 | 4,780 |
| Gilman | 1 | 1,612 |
| Onarga | 1 | 1,430 |
| Clifton | 1 | 1,385 |
| Sheldon | 1 | 1,195 |
| Milford | 1 | 1,052 |
| Ashkum | 1 | 918 |
| Cissna Park | 1 | 903 |
| Danforth | 1 | 611 |
| Crescent City | 1 | 456 |
| Buckley | 1 | 422 |
| Martinton | 1 | 363 |
| Woodland | 1 | 297 |
| Beaverville | 1 | 289 |
| Donovan | 1 | 281 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Iroquois County.
Not sure you are in Iroquois County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Iroquois County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
60911 | Ashkum , IL | Standard | 1,325 | $89,792 | $158,700 |
60912 | Beaverville , IL | Standard | 475 | $59,375 | $81,800 |
60918 | Buckley , IL | Standard | 754 | $73,500 | $122,300 |
60924 | Cissna Park , IL | Standard | 1,565 | $78,250 | $154,900 |
60926 | Claytonville , IL | Standard | 50 | $45,313 | $42,800 |
60927 | Clifton , IL | Standard | 2,300 | $102,143 | $213,700 |
60928 | Crescent City , IL | Standard | 493 | $55,000 | $116,600 |
60930 | Danforth , IL | Standard | 761 | $58,125 | $165,100 |
60931 | Donovan , IL | Standard | 510 | $53,500 | $104,700 |
60938 | Gilman , IL | Standard | 2,035 | $73,244 | $136,000 |
60939 | Goodwine , IL | Standard | 0 | — | — |
60945 | Iroquois , IL | Standard | 183 | $52,188 | $92,400 |
60948 | Loda , IL | Standard | 1,660 | $106,250 | $229,600 |
60951 | Martinton , IL | Standard | 796 | $81,250 | $117,800 |
60953 | Milford , IL | Standard | 2,075 | $59,135 | $106,700 |
60955 | Onarga , IL | Standard | 1,953 | $79,034 | $108,700 |
60956 | Papineau , IL | Standard | 132 | $51,250 | $72,000 |
60966 | Sheldon , IL | Standard | 1,385 | $46,944 | $85,200 |
60967 | Stockland , IL | Standard | 51 | — | — |
60968 | Thawville , IL | Standard | 374 | $46,250 | $92,100 |
60970 | Watseka , IL | Standard | 5,991 | $46,688 | $119,900 |
60973 | Wellington , IL | Standard | 347 | $85,250 | $75,600 |
60974 | Woodland , IL | Standard | 297 | $51,932 | $86,400 |
Cite this page
zipcodes.pro. “Iroquois County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/il/county/iroquois
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