Where fiber is being built in South Dakota
As of Dec 31, 2025, FCC filings show fiber at 65.6% of South Dakota's 498,516 homes, and the number of fiber homes grew 11.6% from June 30, 2025.
Fiber was filed in 159 of 160 South Dakota cities and towns with 250 or more homes. In 117 of them it reached more than half of homes, and in the typical one it reached 100%.
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
South Dakota 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 |
|---|---|---|---|---|
| Aurora County | 1,816 | 99.1% | none filed | -5.5% |
| Beadle County | 9,887 | 28.4% | at least 70.7% | -2.1% |
| Bennett County | 1,524 | 82.9% | none filed | -2% |
| Bon Homme County | 4,095 | 85.2% | none filed | -5.9% |
| Brookings County | 17,665 | 88.9% | at least 10.7% | -7.6% |
| Brown County | 21,138 | 84.6% | at least 14.3% | -0.8% |
| Brule County | 3,361 | 98.9% | none filed | -3.4% |
| Buffalo County | 792 | 98.9% | none filed | no data |
| Butte County | 5,914 | 39.2% | at least 44.2% | +57.4% |
| Campbell County | 1,429 | 99.9% | none filed | -2.3% |
| Charles Mix County | 5,615 | 73.2% | none filed | -8.9% |
| Clark County | 2,280 | 96.5% | none filed | -6.9% |
| Clay County | 7,284 | 83.9% | at least 9.6% | -6.3% |
| Codington County | 15,781 | 37.6% | at least 59.6% | +122.5% |
| Corson County | 1,951 | 75.2% | none filed | -1.5% |
| Custer County | 6,814 | 96.8% | none filed | +8.1% |
| Davison County | 11,239 | 96.4% | at least 2.9% | -1.8% |
| Day County | 4,785 | 98.3% | none filed | -6% |
| Deuel County | 2,865 | 99.6% | none filed | -0.8% |
| Dewey County | 3,003 | 85.2% | none filed | -3.5% |
| Douglas County | 2,015 | 99.4% | none filed | -2.7% |
| Edmunds County | 2,562 | 87.9% | at least 9.1% | -1.9% |
| Fall River County | 5,105 | 85.2% | none filed | -4.1% |
| Faulk County | 1,384 | 97.7% | none filed | -0.7% |
| Grant County | 4,544 | 91% | at least 7% | -6.1% |
| Gregory County | 3,035 | 98.3% | none filed | -0.7% |
| Haakon County | 1,553 | 98.5% | none filed | +8.4% |
| Hamlin County | 3,815 | 99.1% | none filed | -2.5% |
| Hand County | 2,150 | 83.7% | at least 14.6% | +0.3% |
| Hanson County | 1,739 | 95.5% | none filed | -1.2% |
| Harding County | 927 | 100% | none filed | no data |
| Hughes County | 9,389 | 25.7% | at least 72.5% | -1.5% |
| Hutchinson County | 4,869 | 99% | none filed | -4% |
| Hyde County | 908 | 100% | none filed | no data |
| Jackson County | 1,567 | 70.5% | at least 12.3% | -1.2% |
| Jerauld County | 1,223 | 99.9% | none filed | -3.6% |
| Jones County | 892 | 98.1% | none filed | no data |
| Kingsbury County | 3,794 | 94.9% | none filed | -0.6% |
| Lake County | 6,734 | 54.5% | at least 40.2% | +14.7% |
| Lawrence County | 17,593 | 29.1% | at least 48.2% | +500.9% |
| Lincoln County | 35,148 | 68.7% | at least 30% | +10.5% |
| Lyman County | 2,445 | 99.1% | none filed | -0.6% |
| Marshall County | 3,286 | 99.8% | none filed | -4.9% |
| McCook County | 3,202 | 97% | none filed | -3.4% |
| McPherson County | 1,832 | 99.9% | none filed | -5.3% |
| Meade County | 15,433 | 42.8% | at least 42.4% | +65.2% |
| Mellette County | 1,055 | 64.1% | none filed | -0.7% |
| Miner County | 1,736 | 97.4% | none filed | -5.2% |
| Minnehaha County | 102,720 | 65.3% | at least 33.9% | +23.1% |
| Moody County | 3,502 | 91.9% | at least 5.9% | -0.8% |
| Oglala Lakota County | 4,380 | 57% | at least 14.2% | no change |
| Pennington County | 59,046 | 35.9% | at least 55.7% | +123.8% |
| Perkins County | 2,116 | 99.9% | none filed | -8.9% |
| Potter County | 2,417 | 100% | none filed | -9.3% |
| Roberts County | 6,127 | 99.7% | none filed | -7.7% |
| Sanborn County | 1,540 | 99.7% | none filed | -3.9% |
| Spink County | 4,138 | 87.6% | at least 6.6% | +1.2% |
| Stanley County | 2,006 | 32.7% | at least 63.9% | +13.7% |
| Sully County | 1,525 | 100% | none filed | -3.8% |
| Todd County | 3,638 | 19.1% | at least 31.6% | -6.2% |
| Tripp County | 3,393 | 94.5% | none filed | -3.3% |
| Turner County | 4,994 | 68% | at least 18.2% | +2.2% |
| Union County | 9,895 | 63.9% | at least 28.3% | -8.9% |
| Walworth County | 3,833 | 100% | none filed | -3.2% |
| Yankton County | 12,804 | 32.3% | at least 61.1% | +132% |
| Ziebach County | 1,269 | 89.5% | none filed | -6.2% |
The 30 largest places in South Dakota
By number of homes. Search above for any of the other 451 cities and towns.
| City or town | Homes | Fiber share | Cable, no fiber | Fiber home growth |
|---|---|---|---|---|
| Sioux Falls | 101,083 | 64.3% | at least 35.4% | +31.8% |
| Rapid City | 40,143 | 33.5% | at least 65% | +333.1% |
| Aberdeen | 14,596 | 84% | at least 15.9% | -0.3% |
| Watertown | 12,535 | 26.8% | at least 71.6% | +26.3 points (small June base) |
| Brookings | 11,651 | 83.8% | at least 16.2% | -9.5% |
| Mitchell | 8,539 | 96.9% | at least 3% | -1.6% |
| Yankton | 8,021 | 24.3% | at least 75% | +22.1 points (small June base) |
| Pierre | 7,209 | 3.3% | at least 94.4% | +0.6 points (small June base) |
| Spearfish | 6,926 | 35.8% | at least 63.1% | +598% |
| Huron | 6,916 | 0.7% | at least 98.6% | no change (small June base) |
| Vermillion | 4,938 | 90.8% | at least 8.9% | -7.7% |
| Brandon | 4,644 | 100% | none filed | -1.9% |
| Sturgis | 4,217 | 38.6% | at least 58.4% | +35.6 points (small June base) |
| Box Elder | 3,846 | 70.6% | at least 26.1% | +9.2% |
| Belle Fourche | 3,267 | 28.5% | at least 68.8% | +26.7 points (small June base) |
| Rapid Valley | 3,253 | 23.4% | at least 76.2% | +21.6 points (small June base) |
| Harrisburg | 3,122 | 22% | at least 77.5% | +14.7% |
| Madison | 3,012 | 26.6% | at least 71.6% | +25.9 points (small June base) |
| Tea | 2,894 | 27.7% | at least 72% | +20.5 points (small June base) |
| Dakota Dunes | 2,337 | 69.2% | at least 30.5% | -3.1% |
| Milbank | 2,243 | 100% | none filed | -5.9% |
| Dell Rapids | 2,107 | 100% | none filed | +3% |
| North Sioux City | 1,949 | 25.8% | at least 72.2% | -3.6% |
| Lead | 1,919 | 41.8% | at least 57.6% | +41.8 points (small June base) |
| Mobridge | 1,916 | 100% | none filed | -5.2% |
| Hot Springs | 1,833 | 99.7% | none filed | -23.2% |
| Canton | 1,686 | 8.5% | at least 90.2% | +8.4 points (small June base) |
| Hartford | 1,679 | 100% | none filed | +3% |
| Custer | 1,623 | 100% | none filed | -6.7% |
| Chamberlain | 1,557 | 99.6% | none filed | -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.
Found a market? Talk to a recruiter.
Leave your name and number and a recruiter calls you back. Bring the agency checklist to the call and ask every question on it.
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.