Fall River County, SD Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Fall River County, SD

Coverage rankings for Fall River County, SD

AT&T currently ranks first for coverage in this area, with a coverage score of 59.5. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1AT&T59.580.5%79.7%40.1%29.2% -114 dBm
2Verizon50.486.6%86.6%0.0%0.0% -96 dBm
3T-Mobile40.739.8%39.8%28.2%18.1% -96 dBm

Scores include coverage area, network type, and average signal strength.

Cell phone coverage map for Fall River County, SD

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 Fall River County, SD

#1

AT&T

Coverage Score 59.5
In Fall River County, SD
Overall
80.5%
4G LTE
79.7%
5G
40.1%
Fast 5G
29.2%
Average Signal -114 dBm
#2

Verizon

Coverage Score 50.4
In Fall River County, SD
Overall
86.6%
4G LTE
86.6%
5G
0.0%
Fast 5G
0.0%
Average Signal -96 dBm
#3

T-Mobile

Coverage Score 40.7
In Fall River County, SD
Overall
39.8%
4G LTE
39.8%
5G
28.2%
Fast 5G
18.1%
Average Signal -96 dBm
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Coverage by city in Fall River County, SD

Cities and towns are shown for county-level comparison. Coverage percentages use land-area only coverage.

CityVerizonAT&TT-Mobile
Angostura, SD 100.0% 100.0% 0.0% 0.0% -85 dBm 100.0% 100.0% 84.9% 74.1% -111 dBm 100.0% 100.0% 99.7% 92.1% -87 dBm
Ardmore, SD 100.0% 100.0% 0.0% 0.0% -102 dBm 100.0% 100.0% 0.0% 0.0% -80 dBm N/A N/A N/A N/A N/A
Dudley, SD 100.0% 100.0% 0.0% 0.0% -60 dBm 100.0% 100.0% 100.0% 100.0% -90 dBm 100.0% 100.0% 100.0% 100.0% -75 dBm
Edgemont, SD 100.0% 100.0% 0.0% 0.0% -73 dBm 100.0% 100.0% 100.0% 83.8% -94 dBm 100.0% 100.0% 100.0% 100.0% -68 dBm
Hot Springs, SD 100.0% 100.0% 0.0% 0.0% -78 dBm 99.1% 38.3% 99.1% 57.0% -99 dBm 100.0% 100.0% 99.1% 80.4% -82 dBm
Maverick Junction, SD 100.0% 100.0% 0.0% 0.0% -71 dBm 100.0% 100.0% 100.0% 100.0% -107 dBm 100.0% 100.0% 80.0% 40.0% -98 dBm
Oelrichs, SD 100.0% 100.0% 0.0% 0.0% -70 dBm 100.0% 100.0% 100.0% 100.0% -90 dBm 100.0% 100.0% 100.0% 100.0% -64 dBm
Oral, SD 100.0% 100.0% 0.0% 0.0% -84 dBm 100.0% 100.0% 85.0% 37.5% -118 dBm 32.5% 32.5% 2.5% 0.0% -108 dBm
Provo, SD 100.0% 100.0% 0.0% 0.0% -96 dBm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Smithwick, SD 100.0% 100.0% 0.0% 0.0% -102 dBm 95.2% 95.2% 40.5% 7.1% -120 dBm 42.9% 42.9% 0.0% 0.0% -108 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 Fall River County, SD 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.