Fiber market lookup
Where fiber is being built in Illinois
As of Dec 31, 2025, FCC filings show fiber at 40.4% of Illinois's 6.1 million homes, and the number of fiber homes grew 9.9% from June 30, 2025.
Fiber was filed in 851 of 963 Illinois cities and towns with 250 or more homes. In 555 of them it reached more than half of homes, and in the typical one it reached 80.2%.
Nationally, fiber was filed at 55.8% of homes. FCC Broadband Data Collection, residential units, 25/3 Mbps or faster. Filed by the providers themselves. How this is computed
Every county
Illinois counties
Pick a county for its full set of measures, grants and providers. Shares are of residential units, FCC filing as of Dec 31, 2025; growth is from June 30, 2025.
| County | Homes | Fiber share | Cable, no fiber | Fiber home growth |
|---|---|---|---|---|
| Adams County | 37,097 | 86.8% | at least 5% | -2.6% |
| Alexander County | 3,702 | 2.6% | none filed | +0.3 points (small June base) |
| Bond County | 8,506 | 36.6% | at least 7.1% | +222.9% |
| Boone County | 21,728 | 36% | at least 52% | +5.2% |
| Brown County | 3,034 | 65.9% | none filed | -0.3% |
| Bureau County | 20,224 | 49.3% | at least 24.4% | +43.7% |
| Calhoun County | 2,825 | 57.1% | none filed | -7.7% |
| Carroll County | 9,878 | 77.6% | at least 9.2% | +43.5% |
| Cass County | 7,014 | 91.5% | none filed | -5.1% |
| Champaign County | 104,565 | 80.6% | at least 11.8% | +4.5% |
| Christian County | 17,823 | 75.2% | at least 8% | -1.4% |
| Clark County | 8,578 | 58.8% | at least 4% | +1.4% |
| Clay County | 8,313 | 92.8% | none filed | -0.2% |
| Clinton County | 17,563 | 29.7% | at least 34.4% | +27.1% |
| Coles County | 24,793 | 59.7% | at least 23.1% | +1.9% |
| Cook County | 2.5 million | 31.8% | at least 67.7% | +8.3% |
| Crawford County | 10,049 | 60% | at least 11.5% | -2.1% |
| Cumberland County | 5,676 | 44.1% | at least 7.8% | -1.6% |
| De Witt County | 8,616 | 66% | at least 7.1% | +5% |
| DeKalb County | 46,993 | 67.7% | at least 20.6% | -4% |
| Douglas County | 10,124 | 62.5% | at least 9.7% | +1.9% |
| DuPage County | 402,586 | 24.4% | at least 75.2% | +15.9% |
| Edgar County | 10,794 | 60.3% | at least 5.7% | +4.8% |
| Edwards County | 4,170 | 58.5% | at least 16.3% | -5.1% |
| Effingham County | 17,832 | 64.3% | at least 18.4% | +10.5% |
| Fayette County | 10,594 | 35.9% | at least 15.2% | +32.8% |
| Ford County | 7,226 | 62.4% | at least 9.6% | -2.3% |
| Franklin County | 21,327 | 67.5% | at least 17.2% | +11.2% |
| Fulton County | 19,524 | 65.8% | at least 14.9% | -1.8% |
| Gallatin County | 3,225 | 47.5% | at least 17% | +10.1% |
| Greene County | 7,892 | 50.9% | at least 4.6% | +10.9% |
| Grundy County | 23,632 | 17.5% | at least 66.2% | +12.1% |
| Hamilton County | 4,999 | 63.7% | at least 1.3% | +1.8% |
| Hancock County | 12,170 | 63.7% | at least 10.4% | +1% |
| Hardin County | 3,085 | 96.6% | none filed | -1.2% |
| Henderson County | 4,587 | 57.9% | at least 7% | -5.2% |
| Henry County | 24,797 | 85.2% | at least 3.1% | +2.9% |
| Iroquois County | 15,451 | 53.6% | at least 9.8% | -3% |
| Jackson County | 31,278 | 58.7% | at least 20% | +12.5% |
| Jasper County | 5,555 | 47.2% | at least 6.9% | -0.8% |
| Jefferson County | 22,041 | 44.4% | at least 19.6% | +2.5% |
| Jersey County | 11,852 | 55.5% | at least 13.7% | +16.3% |
| Jo Daviess County | 17,011 | 87% | at least 7.1% | +12.5% |
| Johnson County | 6,833 | 67.4% | at least 2.5% | +8.2% |
| Kane County | 210,412 | 50.2% | at least 46.8% | +7.9% |
| Kankakee County | 50,189 | 44.4% | at least 41.1% | +17.4% |
| Kendall County | 51,872 | 71.4% | at least 22.3% | -0.5% |
| Knox County | 26,827 | 77.6% | at least 14.2% | +1.8% |
| Lake County | 294,843 | 16.5% | at least 81.8% | +64.7% |
| LaSalle County | 60,019 | 40% | at least 43.4% | +0.8% |
| Lawrence County | 7,628 | 42.2% | at least 26.7% | +7.9% |
| Lee County | 20,286 | 38.7% | at least 18.1% | +19.8% |
| Livingston County | 18,754 | 63.8% | at least 7.2% | -0.9% |
| Logan County | 13,853 | 69.5% | at least 7.9% | +2.7% |
| Macon County | 54,135 | 24.1% | at least 69.4% | +38.2% |
| Macoupin County | 26,577 | 56.8% | at least 15.4% | +3% |
| Madison County | 129,599 | 42.1% | at least 51.9% | +29.8% |
| Marion County | 20,288 | 53.5% | at least 19.8% | +4.5% |
| Marshall County | 7,193 | 52.7% | at least 14.9% | +6% |
| Mason County | 8,201 | 74.4% | at least 5% | -1% |
| Massac County | 7,826 | 43.3% | at least 18% | +13.4% |
| McDonough County | 16,028 | 69.1% | at least 23.7% | +3.7% |
| McHenry County | 133,260 | 34% | at least 59.7% | +37.9% |
| McLean County | 82,992 | 76.4% | at least 14.5% | +11.9% |
| Menard County | 7,026 | 67.7% | at least 1.5% | -20% |
| Mercer County | 8,574 | 43.8% | at least 25.4% | +2% |
| Monroe County | 15,954 | 39% | at least 32.4% | +5.7% |
| Montgomery County | 14,944 | 63.4% | at least 3.5% | +12.9% |
| Morgan County | 17,696 | 74.5% | at least 2.7% | +1.9% |
| Moultrie County | 7,432 | 67.3% | at least 9.4% | +6.1% |
| Ogle County | 26,566 | 40.9% | at least 28.8% | +6.6% |
| Peoria County | 92,975 | 67.1% | at least 26.7% | +3.5% |
| Perry County | 11,671 | 42.6% | at least 30.2% | +23.5% |
| Piatt County | 8,558 | 75.1% | at least 2.2% | +10.1% |
| Pike County | 9,871 | 47.5% | none filed | -8.7% |
| Pope County | 3,044 | 68% | none filed | +7.7% |
| Pulaski County | 3,586 | 14.9% | at least 23% | +66.5% |
| Putnam County | 3,695 | 52.8% | at least 10.9% | +36.9% |
| Randolph County | 17,186 | 49.8% | at least 20.6% | +11.5% |
| Richland County | 8,880 | 60.3% | at least 10.8% | -4.9% |
| Rock Island County | 73,384 | 85.7% | at least 11.2% | -0.2% |
| Saline County | 13,633 | 84.5% | at least 5% | -4.5% |
| Sangamon County | 105,442 | 52% | at least 41.6% | -0.3% |
| Schuyler County | 4,595 | 58.6% | none filed | -8.6% |
| Scott County | 3,265 | 52.8% | at least 1.6% | -2.9% |
| Shelby County | 12,341 | 40.1% | at least 11.8% | +0.8% |
| St. Clair County | 125,771 | 35.6% | at least 55.3% | +14.8% |
| Stark County | 3,298 | 53.6% | at least 11.8% | +0.7% |
| Stephenson County | 25,085 | 16.3% | at least 61.8% | +9.8% |
| Tazewell County | 64,343 | 79.1% | at least 12.6% | +7% |
| Union County | 9,051 | 21% | at least 35.5% | +86.6% |
| Vermilion County | 38,119 | 36.7% | at least 46.2% | +1.4% |
| Wabash County | 6,394 | 45.5% | at least 21.2% | +692.1% |
| Warren County | 9,891 | 30.6% | at least 41.2% | -9.1% |
| Washington County | 8,302 | 26.6% | at least 24.5% | +101.5% |
| Wayne County | 9,904 | 76.8% | at least 7.8% | -4.7% |
| White County | 8,475 | 32.4% | at least 34% | +10.1% |
| Whiteside County | 30,347 | 78% | at least 18.8% | +28.2% |
| Will County | 282,225 | 25.3% | at least 72.1% | +19.4% |
| Williamson County | 36,536 | 85.5% | at least 9.6% | +4.1% |
| Winnebago County | 136,845 | 43.7% | at least 52.5% | +52.8% |
| Woodford County | 18,405 | 57.7% | at least 22.6% | -2.4% |
Largest cities and towns
The 30 largest places in Illinois
By number of homes. Search above for any of the other 1,433 cities and towns.
| City or town | Homes | Fiber share | Cable, no fiber | Fiber home growth |
|---|---|---|---|---|
| Chicago | 1.3 million | 33.3% | at least 66.1% | +1.4% |
| Rockford | 72,545 | 33.9% | at least 65.6% | +39.8% |
| Aurora | 64,468 | 32.4% | at least 67.4% | +16.7% |
| Springfield | 63,676 | 50.9% | at least 48.9% | -0.1% |
| Naperville | 62,311 | 7.4% | at least 92.3% | +15.4% |
| Peoria | 56,124 | 69.7% | at least 29.4% | +5.1% |
| Joliet | 55,447 | 20.6% | at least 78.8% | +32.9% |
| Elgin | 44,041 | 22.1% | at least 77.6% | +1.6% |
| Champaign | 43,251 | 93.1% | at least 6.3% | +2.6% |
| Schaumburg | 39,118 | 12.6% | at least 87.2% | +14.3% |
| Evanston | 39,103 | 6.8% | at least 93.2% | +8.8% |
| Bloomington | 38,817 | 81.5% | at least 18.4% | +5.9% |
| Decatur | 37,702 | 9.6% | at least 90.1% | +9.1 points (small June base) |
| Arlington Heights | 35,375 | 17.9% | at least 82% | +10.5% |
| Cicero | 34,540 | 2.5% | at least 97.3% | -16.3% |
| Waukegan | 33,057 | 14.2% | at least 85.3% | +28.5% |
| Oak Park | 30,590 | 66.5% | at least 33.4% | +2.5% |
| Palatine | 30,466 | 10.5% | at least 89.4% | +3.5% |
| Berwyn | 30,092 | 80.2% | at least 19.8% | +31.6% |
| Skokie | 29,950 | 63.1% | at least 36.8% | +10.6% |
| Orland Park | 29,080 | 29.2% | at least 70.7% | +679.2% |
| Oak Lawn | 27,603 | 56.3% | at least 43.5% | +9.5% |
| Tinley Park | 26,411 | 14.9% | at least 85% | +52.9% |
| Des Plaines | 26,352 | 50% | at least 49.8% | +4% |
| Bolingbrook | 25,471 | 18.7% | at least 80.3% | +82.5% |
| Downers Grove | 23,690 | 33.7% | at least 66.2% | +22.2% |
| Mount Prospect | 23,488 | 13.6% | at least 86.4% | +11.7% |
| Normal | 22,165 | 87.5% | at least 12.4% | +13% |
| Glenview | 21,951 | 5.7% | at least 93.9% | -0.3% |
| Moline | 21,724 | 92.3% | at least 7.7% | -0.4% |
The data
Every number on this page traces to one cell in the download. Source: FCC Broadband Data Collection, Fixed Broadband Summary by Geography, filings as of June 30, 2025 and Dec 31, 2025. Census figures: ACS 5-year estimates, 2020 to 2024. Grants: FCC Broadband Funding Map and the state broadband office.
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Figures come from provider filings with the FCC, which providers report themselves and which can be challenged. Nothing on this page is a promise of territory, earnings or service at any address.