ROUND ROCK · TX · FCC DATA

Best cell phone coverage in Round Rock Round Rock, Texas

AT&T, T-Mobile and Verizon all report outdoor coverage of 100% of Round Rock, TX, so no carrier wins on outdoor coverage here.

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

RESULT · ROUND ROCK, TX

Coverage in Round Rock, TX

Population 135,359 (Census 2024 estimate)

What stands out in Round Rock

  • T-Mobile reports 95.6% of Round Rock in a moving car, against 32.6% of Texas as a whole.
  • Beyond the city limits it thins: across Williamson County, T-Mobile reports 67.7% in a moving car, against 95.6% in Round Rock.
  • 5G at 35/3 Mbps covers 100% of Round Rock, against 61.9% of Texas.
✓ ALL THREE REPORT THE SAME
All three carriers
100%

AT&T vs T-Mobile vs Verizon in Round Rock

=
AT&T
Outdoor
100%
In car
100%
=
Verizon
Outdoor
100%
In car
99.9%
=
T-Mobile
Outdoor
100%
In car
95.6%

4G and 5G across all carriers in Round Rock

4G LTE
100%
5G 7/1
100%
5G 35/3
100%

Check your street on each carrier's map

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

Questions about coverage in Round Rock

Q1

How does Round Rock compare with the rest of Texas?

Outdoors AT&T 100% (state 84.1%), Verizon 100% (state 86.8%), T-Mobile 100% (state 72.3%); in a moving car AT&T 100% (state 52.1%), Verizon 99.9% (state 40.5%), T-Mobile 95.6% (state 32.6%).

ZIP codes mostly inside Round Rock

78664, 78665.

See the statewide Texas comparison, or coverage in El Paso, Arlington, Plano, Laredo, Amarillo, Denton, Waco, Midland, Abilene, Pearland, Allen, Beaumont.

Cities with figures closest to Round Rock's: Nampa, ID, Amarillo, TX, Fargo, ND, Sacramento, CA, Irving, TX.