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Fiber market lookup

Where fiber is being built in Colorado

As of Dec 31, 2025, FCC filings show fiber at 51% of Colorado's 2.9 million homes, and the number of fiber homes grew 7.3% from June 30, 2025.

Fiber was filed in 254 of 304 Colorado cities and towns with 250 or more homes. In 142 of them it reached more than half of homes, and in the typical one it reached 55.9%.

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

Colorado 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.

CountyHomesFiber shareCable, no fiberFiber home growth
Adams County219,18448.8%at least 48.9%+10.9%
Alamosa County8,71749.8%at least 34.7%+2.2%
Arapahoe County295,54542.2%at least 56.7%+4.6%
Archuleta County11,37216%at least 38%+99%
Baca County2,94638.9%none filed-15.3%
Bent County2,62546.5%none filed-1.8%
Boulder County160,95853.6%at least 40.6%+9.8%
Broomfield County37,69136.4%at least 62.4%+20.3%
Chaffee County13,65436.5%at least 31.7%+28.9%
Cheyenne County1,39219.5%none filed+1.9%
Clear Creek County6,4899.2%at least 37.4%-0.7%
Conejos County4,94871.4%none filed+3.5%
Costilla County3,07566.7%none filed-5.9%
Crowley County1,91330.4%none filed-4.1%
Custer County5,1062.8%none filed+0.1 points (small June base)
Delta County15,75797.4%none filed-4.8%
Denver County397,59364.3%at least 34.9%+2.3%
Dolores County1,91552.8%none filed+0.6%
Douglas County159,89037.7%at least 57.6%+17.3%
Eagle County36,7649.9%at least 83.2%-0.2%
El Paso County340,77758.4%at least 36.5%+8.7%
Elbert County11,92573.8%at least 7.2%+10.2%
Fremont County22,67326%at least 47.2%+21.6%
Garfield County29,33822.3%at least 60.2%-2%
Gilpin County3,88838.3%at least 29.5%-6.9%
Grand County20,0801.8%at least 66.5%+3.2%
Gunnison County14,28521.9%at least 38.8%+11.8%
Hinsdale County1,72052.2%none filed+13.8%
Huerfano County6,41846.4%at least 22.1%-2.5%
Jackson County1,45835.7%none filed+2%
Jefferson County278,30948.1%at least 47.3%+12%
Kiowa County1,14371.3%none filed+14.6%
Kit Carson County4,57072.7%at least 7.6%+0.6%
La Plata County33,99329.3%at least 30.2%+42.5%
Lake County4,92250.6%at least 24.5%+0.3%
Larimer County182,54364.4%at least 26.5%+5.2%
Las Animas County9,58220.4%at least 36.8%-9.6%
Lincoln County3,25695.9%none filed-8.2%
Logan County10,16837.9%at least 38.5%-2.2%
Mesa County78,24553.2%at least 35.9%+18.2%
Mineral County1,46792.4%none filed-0.4%
Moffat County7,61459.9%at least 8.3%-5.2%
Montezuma County13,91236.2%at least 9.8%+19.9%
Montrose County22,72892.4%at least 2.7%-0.7%
Morgan County13,76077%at least 6.2%-1%
Otero County9,89313.9%at least 58.7%-2.1%
Ouray County4,11872.7%none filed-0.7%
Park County15,36714.1%none filed+15.1%
Phillips County2,72971.5%at least 18.3%-3.3%
Pitkin County15,3321.8%at least 83%+0.6 points (small June base)
Prowers County6,59814.9%at least 49.9%-3.4%
Pueblo County80,90762.9%at least 32.9%+4.5%
Rio Blanco County3,8280.7%at least 55.7%+0.7 points (small June base)
Rio Grande County7,80978.5%at least 2.9%-3.6%
Routt County20,47642.4%at least 36.8%-3.6%
Saguache County4,84531.2%none filed-1.8%
San Juan County98485.4%none filedno data
San Miguel County7,33549.8%at least 23.9%-1.5%
Sedgwick County1,83269.1%at least 9.1%-29.6%
Summit County34,98720.2%at least 75%+43.5%
Teller County15,43328.7%at least 16.1%+1.4%
Washington County3,15216.2%none filed-12.1%
Weld County147,05367.3%at least 21.3%+9.7%
Yuma County5,63068.1%at least 0.2%-3.5%
Largest cities and towns

The 30 largest places in Colorado

By number of homes. Search above for any of the other 452 cities and towns.

City or townHomesFiber shareCable, no fiberFiber home growth
Denver397,59364.3%at least 34.9%+2.3%
Colorado Springs237,51359.2%at least 40%+4.9%
Aurora169,64136.7%at least 62.4%+5%
Fort Collins81,31563%at least 35.1%+5.2%
Lakewood80,68149.6%at least 50%+5.8%
Arvada56,55443.7%at least 55.9%+5.4%
Thornton56,02733.8%at least 65.9%+36.1%
Westminster53,85846.2%at least 53.4%+52.6%
Pueblo53,72472%at least 27.4%+8.8%
Boulder50,03538%at least 61%+4.2%
Longmont47,49399.9%none filed+1.5%
Greeley46,52898%at least 1.7%+2.4%
Centennial46,28173.9%at least 26%+0.8%
Highlands Ranch41,39537.6%at least 62.2%+47.4%
Loveland37,86199.9%none filed+1.4%
Broomfield37,69136.4%at least 62.4%+20.3%
Grand Junction36,53561.4%at least 33.8%+17.3%
Castle Rock31,93426.7%at least 73%+1.9%
Parker26,14967%at least 32.6%+13.1%
Commerce City25,58040%at least 57.4%+3.8%
Littleton23,56251.7%at least 48.1%+23.3%
Englewood19,40267.9%at least 31.9%+3.7%
Wheat Ridge18,31962.9%at least 37%-0.2%
Brighton17,61399.1%at least 0.6%+3.1%
Windsor16,83616.3%at least 81.9%+10.8%
Ken Caryl16,08970.8%at least 29.1%+12.5%
Northglenn15,95062.5%at least 37.3%+3.5%
Erie14,81779.3%at least 20.4%+26.4%
Pueblo West14,53556%at least 43.3%-8.5%
Lafayette14,42537.2%at least 62.5%+34.3%

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.

Download Colorado (CSV)Raw JSONMethodology
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