THORNTON · CO · FCC DATA

Best cell phone coverage in Thornton Thornton, Colorado

AT&T, T-Mobile and Verizon all report outdoor coverage of between 99.9% and 100% of Thornton, CO, 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 · THORNTON, CO

Coverage in Thornton, CO

Population 146,689 (Census 2024 estimate)

What stands out in Thornton

  • Verizon reports 96.9% of Thornton in a moving car, against 18% of Colorado as a whole.
  • Beyond the city limits it thins: across Adams County, Verizon reports 32.2% in a moving car, against 96.9% in Thornton.
  • 5G at 35/3 Mbps covers 100% of Thornton, against 37.7% of Colorado.
✓ ALL THREE WITHIN 0.1 POINTS
All three carriers
99.9–100%

AT&T vs T-Mobile vs Verizon in Thornton

=
Verizon
Outdoor
100%
In car
96.9%
=
T-Mobile
Outdoor
100%
In car
92.6%
=
AT&T
Outdoor
99.9%
In car
98.7%

4G and 5G across all carriers in Thornton

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

Check your street on each carrier's map

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

Around Thornton, in Adams County

The towns nearby where one carrier reports the least outdoors: Comanche Creek (AT&T 89.5%).

Questions about coverage in Thornton

Q1

How does Thornton compare with the rest of Colorado?

Outdoors Verizon 100% (state 58.1%), T-Mobile 100% (state 50.7%), AT&T 99.9% (state 68.6%); in a moving car AT&T 98.7% (state 41.3%), Verizon 96.9% (state 18%), T-Mobile 92.6% (state 19.3%).

ZIP codes mostly inside Thornton

80229, 80233, 80241.

See the statewide Colorado comparison, or coverage in Denver, Colorado Springs, Aurora, Fort Collins, Lakewood, Arvada, Westminster, Greeley, Pueblo, Centennial.

Cities with figures closest to Thornton's: Charlotte, NC, Bakersfield, CA, Mesquite, TX, Murrieta, CA, Spokane, WA.