AT&T currently ranks first for coverage in this area, with a coverage score of 71.7. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.Coverage rankings for South Dakota
| Rank | Carrier | Score | Overall | 4G LTE | 5G | Fast 5G | Average Signal |
|---|---|---|---|---|---|---|---|
| 1 | AT&T | 71.7 | 89.9% | 89.0% | 57.1% | 44.8% | -113 dBm |
| 2 | T-Mobile | 65.2 | 69.4% | 69.3% | 57.5% | 37.1% | -95 dBm |
| 3 | Verizon | 59.3 | 90.3% | 90.3% | 20.4% | 10.2% | -96 dBm |
Scores include coverage area, network type, and average signal strength.
Cell phone coverage map for South Dakota
Zoom in for local detail. Tap or click a colored area to see coverage and signal details. On mobile, use two fingers to move the map.
Coverage Key
Less covered More covered
Darker areas mean the carrier covers more of that location.
Map data © OpenStreetMap contributors, © CARTO. Rendered with MapLibre. FCC BDC mobile coverage processed by Compare Wireless Carriers.
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Cell phone coverage by network in South Dakota
#1
AT&T
Coverage Score 71.7
In South Dakota
- Overall
- 89.9%
- 4G LTE
- 89.0%
- 5G
- 57.1%
- Fast 5G
- 44.8%
Average Signal -113 dBm
#2
T-Mobile
Coverage Score 65.2
In South Dakota
- Overall
- 69.4%
- 4G LTE
- 69.3%
- 5G
- 57.5%
- Fast 5G
- 37.1%
Average Signal -95 dBm
#3
Verizon
Coverage Score 59.3
In South Dakota
- Overall
- 90.3%
- 4G LTE
- 90.3%
- 5G
- 20.4%
- Fast 5G
- 10.2%
Average Signal -96 dBm
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Coverage by county in South Dakota
Counties are shown for statewide comparison. Coverage percentages use land-area only coverage.
| County | Verizon | AT&T | T-Mobile |
|---|---|---|---|
| Aurora County, SD | 99.9% 99.9% 29.4% 13.3% -93 dBm | 99.4% 97.2% 93.6% 75.2% -113 dBm | 95.0% 95.0% 86.3% 52.3% -95 dBm |
| Beadle County, SD | 99.7% 99.7% 62.0% 30.8% -94 dBm | 99.8% 99.8% 95.0% 60.8% -113 dBm | 98.7% 98.7% 94.9% 71.8% -91 dBm |
| Bennett County, SD | 92.0% 92.0% 30.5% 13.8% -100 dBm | 89.4% 89.4% 39.9% 36.9% -114 dBm | 47.9% 47.9% 30.6% 13.7% -100 dBm |
| Bon Homme County, SD | 99.0% 98.9% 32.0% 18.0% -91 dBm | 99.8% 99.6% 90.6% 75.5% -109 dBm | 93.2% 93.2% 87.9% 61.4% -93 dBm |
| Brookings County, SD | 98.8% 98.8% 48.0% 33.1% -90 dBm | 97.4% 97.4% 90.3% 84.9% -111 dBm | 91.9% 91.9% 86.5% 70.0% -90 dBm |
| Brown County, SD | 99.8% 99.8% 66.3% 27.0% -97 dBm | 99.4% 99.4% 54.4% 22.9% -114 dBm | 93.7% 93.7% 83.0% 54.6% -94 dBm |
| Brule County, SD | 98.3% 98.3% 10.8% 4.2% -92 dBm | 97.5% 97.5% 74.4% 50.7% -116 dBm | 76.6% 76.6% 56.0% 28.0% -98 dBm |
| Buffalo County, SD | 96.2% 96.2% 45.1% 23.6% -96 dBm | 98.8% 98.8% 58.1% 44.0% -110 dBm | 88.0% 88.0% 77.8% 53.8% -93 dBm |
| Butte County, SD | 86.9% 86.9% 7.7% 3.8% -99 dBm | 91.7% 91.7% 35.8% 25.6% -113 dBm | 55.0% 54.3% 41.8% 21.5% -97 dBm |
| Campbell County, SD | 97.2% 97.2% 29.3% 17.7% -93 dBm | 93.6% 93.6% 51.8% 41.7% -114 dBm | 87.3% 87.3% 75.4% 50.6% -94 dBm |
| Charles Mix County, SD | 97.2% 97.2% 20.6% 6.3% -94 dBm | 98.0% 98.0% 69.7% 53.3% -112 dBm | 85.5% 85.5% 76.4% 52.4% -94 dBm |
| Clark County, SD | 96.5% 96.5% 55.2% 30.8% -95 dBm | 99.3% 99.3% 62.7% 47.3% -110 dBm | 96.0% 96.0% 87.4% 61.0% -93 dBm |
| Clay County, SD | 100.0% 100.0% 63.1% 37.6% -92 dBm | 100.0% 100.0% 98.6% 88.2% -109 dBm | 96.9% 96.9% 92.6% 73.5% -90 dBm |
| Codington County, SD | 100.0% 100.0% 40.4% 24.0% -91 dBm | 99.9% 99.1% 98.0% 70.7% -109 dBm | 99.0% 99.0% 92.5% 74.9% -89 dBm |
| Corson County, SD | 77.3% 77.3% 7.1% 2.7% -101 dBm | 84.1% 77.8% 65.9% 42.9% -115 dBm | 22.0% 22.0% 12.3% 5.1% -101 dBm |
| Custer County, SD | 73.0% 73.0% 6.6% 3.6% -99 dBm | 87.9% 87.3% 57.5% 41.4% -114 dBm | 42.1% 41.6% 31.3% 15.1% -97 dBm |
| Davison County, SD | 99.9% 99.9% 51.3% 16.3% -96 dBm | 99.9% 99.7% 97.5% 76.6% -111 dBm | 95.8% 95.8% 86.9% 57.8% -94 dBm |
| Day County, SD | 99.3% 99.3% 6.9% 1.2% -94 dBm | 97.7% 97.6% 75.1% 54.1% -115 dBm | 94.0% 94.0% 79.1% 45.3% -96 dBm |
| Deuel County, SD | 100.0% 100.0% 12.6% 9.0% -90 dBm | 99.0% 96.2% 91.2% 79.7% -112 dBm | 93.5% 93.5% 87.7% 69.4% -90 dBm |
| Dewey County, SD | 75.8% 75.8% 4.4% 2.3% -98 dBm | 68.6% 65.6% 43.5% 36.2% -117 dBm | 61.7% 61.7% 32.5% 17.4% -98 dBm |
| Douglas County, SD | 100.0% 100.0% 68.8% 30.3% -97 dBm | 99.1% 91.0% 95.4% 85.5% -111 dBm | 93.5% 93.5% 83.9% 58.5% -94 dBm |
| Edmunds County, SD | 99.0% 99.0% 7.6% 4.9% -94 dBm | 92.9% 92.9% 0.2% 0.2% -109 dBm | 97.5% 97.5% 86.2% 57.6% -94 dBm |
| Fall River County, SD | 86.6% 86.6% 0.0% 0.0% -96 dBm | 80.5% 79.7% 40.1% 29.2% -114 dBm | 39.8% 39.8% 28.2% 18.1% -96 dBm |
| Faulk County, SD | 99.0% 99.0% 31.7% 11.8% -96 dBm | 97.5% 97.5% 25.4% 22.7% -113 dBm | 93.9% 93.9% 75.4% 49.9% -95 dBm |
| Grant County, SD | 99.9% 99.9% 24.5% 11.2% -94 dBm | 99.8% 99.2% 94.7% 71.6% -112 dBm | 95.5% 95.5% 84.0% 53.5% -94 dBm |
| Gregory County, SD | 93.2% 93.1% 11.6% 7.4% -93 dBm | 79.5% 79.5% 15.7% 14.0% -112 dBm | 66.2% 66.2% 52.2% 29.7% -96 dBm |
| Haakon County, SD | 86.7% 86.7% 0.2% 0.0% -98 dBm | 90.9% 90.9% 59.6% 50.0% -114 dBm | 62.8% 62.8% 45.8% 27.3% -96 dBm |
| Hamlin County, SD | 100.0% 100.0% 20.0% 10.8% -93 dBm | 99.9% 99.9% 97.5% 69.5% -111 dBm | 99.8% 99.8% 97.6% 76.7% -92 dBm |
| Hand County, SD | 97.6% 97.6% 8.7% 1.5% -96 dBm | 92.9% 92.9% 19.7% 16.9% -113 dBm | 83.6% 83.5% 65.4% 32.8% -98 dBm |
| Hanson County, SD | 99.5% 99.5% 68.9% 30.8% -96 dBm | 99.7% 99.7% 91.3% 76.4% -115 dBm | 98.4% 98.4% 93.7% 70.6% -91 dBm |
| Harding County, SD | 74.6% 74.6% 3.4% 1.8% -99 dBm | 74.8% 74.8% 17.2% 15.9% -113 dBm | 31.0% 31.0% 21.7% 13.9% -97 dBm |
| Hughes County, SD | 98.6% 98.6% 22.7% 12.1% -94 dBm | 99.3% 99.3% 85.6% 68.9% -113 dBm | 89.5% 89.5% 78.1% 52.6% -94 dBm |
| Hutchinson County, SD | 98.3% 98.3% 28.4% 14.0% -92 dBm | 99.9% 99.9% 98.4% 81.9% -108 dBm | 95.3% 95.3% 87.8% 55.6% -94 dBm |
| Hyde County, SD | 97.1% 97.1% 33.5% 16.9% -97 dBm | 96.3% 96.3% 77.4% 64.8% -114 dBm | 91.4% 91.2% 79.6% 48.3% -95 dBm |
| Jackson County, SD | 96.7% 96.7% 12.6% 7.5% -97 dBm | 91.1% 91.1% 56.1% 45.0% -114 dBm | 56.8% 56.3% 49.0% 27.9% -95 dBm |
| Jerauld County, SD | 92.7% 92.7% 26.0% 7.1% -98 dBm | 98.0% 98.0% 84.8% 66.1% -113 dBm | 86.2% 86.2% 78.1% 50.5% -95 dBm |
| Jones County, SD | 92.7% 92.7% 6.9% 2.5% -96 dBm | 80.9% 68.0% 68.3% 56.3% -115 dBm | 68.3% 68.3% 50.3% 28.3% -97 dBm |
| Kingsbury County, SD | 100.0% 100.0% 30.1% 14.2% -93 dBm | 100.0% 100.0% 97.0% 83.3% -113 dBm | 98.7% 98.7% 92.1% 60.0% -94 dBm |
| Lake County, SD | 99.1% 99.1% 48.3% 24.7% -95 dBm | 100.0% 100.0% 98.0% 86.7% -109 dBm | 95.7% 95.7% 86.3% 56.7% -94 dBm |
| Lawrence County, SD | 81.8% 81.8% 9.0% 4.8% -100 dBm | 80.6% 67.7% 55.7% 38.3% -113 dBm | 50.5% 49.5% 45.5% 32.0% -92 dBm |
| Lincoln County, SD | 98.5% 98.5% 70.9% 51.2% -92 dBm | 98.8% 96.9% 96.5% 76.8% -109 dBm | 93.5% 93.5% 87.3% 72.2% -90 dBm |
| Lyman County, SD | 89.8% 89.8% 28.3% 14.2% -96 dBm | 91.4% 91.4% 72.1% 53.0% -114 dBm | 75.6% 75.6% 63.5% 42.7% -94 dBm |
| Marshall County, SD | 98.7% 98.7% 28.1% 12.2% -94 dBm | 97.6% 97.6% 86.6% 65.5% -114 dBm | 86.5% 86.1% 78.6% 56.1% -92 dBm |
| McCook County, SD | 99.9% 99.9% 31.3% 16.1% -90 dBm | 100.0% 100.0% 94.6% 82.1% -112 dBm | 99.1% 99.1% 95.8% 78.6% -90 dBm |
| McPherson County, SD | 99.5% 99.5% 11.0% 6.6% -95 dBm | 99.0% 99.0% 1.3% 1.3% -105 dBm | 92.4% 92.4% 75.5% 45.5% -96 dBm |
| Meade County, SD | 84.1% 84.1% 3.2% 1.5% -99 dBm | 89.0% 88.8% 46.1% 38.9% -112 dBm | 66.4% 66.1% 47.8% 25.8% -98 dBm |
| Mellette County, SD | 91.9% 91.8% 8.4% 4.9% -99 dBm | 86.9% 86.6% 66.5% 57.3% -116 dBm | 56.6% 56.5% 43.7% 25.8% -97 dBm |
| Miner County, SD | 99.8% 99.8% 62.8% 32.2% -96 dBm | 100.0% 100.0% 92.9% 76.4% -113 dBm | 96.2% 96.2% 81.0% 41.8% -96 dBm |
| Minnehaha County, SD | 100.0% 100.0% 46.8% 33.0% -89 dBm | 99.9% 99.7% 92.3% 71.0% -111 dBm | 97.7% 97.7% 90.8% 69.2% -90 dBm |
| Moody County, SD | 99.8% 99.8% 31.3% 13.2% -93 dBm | 99.9% 99.9% 94.5% 69.7% -111 dBm | 98.3% 98.3% 93.9% 72.0% -91 dBm |
| Oglala Lakota County, SD | 89.4% 89.4% 2.2% 1.0% -97 dBm | 93.4% 93.2% 46.3% 31.6% -112 dBm | 24.1% 23.8% 17.5% 11.9% -95 dBm |
| Pennington County, SD | 77.6% 77.6% 8.4% 4.9% -97 dBm | 75.3% 74.5% 41.5% 29.9% -114 dBm | 49.3% 49.0% 42.3% 30.5% -92 dBm |
| Perkins County, SD | 75.3% 75.3% 11.0% 3.9% -101 dBm | 69.2% 68.1% 34.3% 31.1% -116 dBm | 32.9% 32.9% 21.4% 11.6% -99 dBm |
| Potter County, SD | 96.4% 96.4% 0.0% 0.0% -95 dBm | 97.0% 97.0% 35.9% 31.9% -110 dBm | 93.7% 93.7% 79.2% 51.6% -95 dBm |
| Roberts County, SD | 99.9% 99.9% 24.9% 13.4% -91 dBm | 99.6% 99.3% 97.5% 78.9% -110 dBm | 86.7% 86.5% 72.7% 43.4% -95 dBm |
| Sanborn County, SD | 99.7% 99.7% 55.4% 26.3% -96 dBm | 99.8% 99.8% 95.7% 70.1% -112 dBm | 95.5% 95.5% 86.4% 54.6% -94 dBm |
| Spink County, SD | 99.9% 99.9% 79.9% 34.9% -96 dBm | 99.7% 99.7% 11.4% 8.3% -106 dBm | 98.3% 98.3% 93.3% 64.6% -94 dBm |
| Stanley County, SD | 77.4% 77.4% 5.0% 3.5% -99 dBm | 87.6% 83.4% 69.0% 56.4% -114 dBm | 60.9% 60.9% 40.6% 25.2% -96 dBm |
| Sully County, SD | 97.6% 97.6% 5.3% 1.3% -95 dBm | 93.5% 92.7% 60.7% 41.9% -115 dBm | 89.0% 89.0% 79.3% 49.1% -96 dBm |
| Todd County, SD | 91.4% 91.4% 5.0% 1.7% -98 dBm | 88.8% 88.8% 54.8% 41.5% -113 dBm | 68.0% 68.0% 51.9% 29.9% -96 dBm |
| Tripp County, SD | 94.5% 94.5% 16.7% 8.6% -98 dBm | 89.2% 89.2% 44.0% 35.5% -113 dBm | 64.7% 64.7% 49.6% 29.2% -96 dBm |
| Turner County, SD | 100.0% 100.0% 49.6% 25.6% -91 dBm | 100.0% 100.0% 99.0% 94.9% -108 dBm | 97.3% 97.3% 91.3% 69.6% -92 dBm |
| Union County, SD | 99.0% 99.0% 46.8% 33.9% -94 dBm | 95.9% 95.3% 79.0% 67.4% -109 dBm | 94.9% 94.9% 89.0% 76.1% -87 dBm |
| Walworth County, SD | 98.4% 98.4% 0.9% 0.0% -92 dBm | 99.3% 99.3% 45.4% 39.1% -110 dBm | 88.5% 88.4% 70.3% 39.5% -96 dBm |
| Yankton County, SD | 99.9% 99.9% 67.3% 43.2% -93 dBm | 99.7% 99.5% 96.4% 82.4% -108 dBm | 89.2% 89.2% 78.8% 51.2% -94 dBm |
| Ziebach County, SD | 72.9% 72.9% 8.0% 4.1% -101 dBm | 71.2% 71.0% 37.7% 33.6% -117 dBm | 36.3% 36.3% 21.3% 11.0% -100 dBm |
About The Coverage Data
Coverage and signal estimates are derived by Compare Wireless Carriers from carrier-reported data in the FCC’s National Broadband Coverage Map, last updated in June 2025. “Percent covered” shows how much of the city or ZIP code area has a carrier signal, whether weak or strong. Signal bars show the estimated average signal strength in areas of South Dakota where that carrier has coverage.
If a carrier says you should have service but you do not, run a challenge test with the FCC Mobile Speed Test App. The FCC uses those results to check carrier-submitted coverage data and requires a carrier response when enough tests show a pattern of inaccurate coverage reporting.