SOUTH DAKOTA · STATEWIDE · FCC DATA

Best cell phone coverage in South Dakota South Dakota, statewide

Verizon reports the widest coverage in South Dakota: 89.8% of the area outdoors, 18 points ahead of T-Mobile. AT&T is close enough behind to call the top two level.

Carrier-reported coverage from FCC carrier filings as of December 31, 2025, not measured signal. How these figures are read

RESULT · SOUTH DAKOTA

Coverage in South Dakota

What stands out in South Dakota

  • In a moving car the order changes in South Dakota: AT&T reports 63.6%, Verizon 45.7%.
  • T-Mobile loses the most of South Dakota in a moving car: 71.8% outdoors, 26.1% in a car.
  • AT&T reports 89.6% of South Dakota outdoors, against 57.4% of the US.
  • 5G at 35/3 Mbps covers 62.9% of South Dakota, against 39.4% of the US.
★ WIDEST REPORTED COVERAGE
Verizon
89.8%
Outdoor
89.8%
In car
45.7%

AT&T vs T-Mobile vs Verizon in South Dakota

#1
Verizon
Outdoor
89.8%
In car
45.7%
#2
AT&T
Outdoor
89.6%
In car
63.6%
#3
T-Mobile
Outdoor
71.8%
In car
26.1%

4G and 5G across all carriers in South Dakota

4G LTE
95.7%
5G 7/1
77.3%
5G 35/3
62.9%

Check your street on each carrier's map

Verizon coverage map → AT&T coverage map → T-Mobile coverage map →

Where coverage runs thin in South Dakota

Counties with the least land under 4G LTE from any carrier: Pennington County (83.4%), Dewey County (87.3%), Perkins County (87.4%), Ziebach County (87.6%), Harding County (88.3%). See how South Dakota compares in the 10 US states with the least cell coverage.

Coverage in South Dakota's largest cities

States with figures closest to South Dakota's