COLORADO · STATEWIDE · FCC DATA

Best cell phone coverage in Colorado Colorado, statewide · AT&T · T-Mobile · Verizon

AT&T reports the widest coverage in Colorado: 68.6% of the area outdoors, 17.9 points ahead of T-Mobile.

Figures are the share of Colorado's area where each carrier reports 4G LTE or 5G service to the FCC, as of December 31, 2025. A state or city figure can hide dead spots, so check your own ZIP code below.

RESULT · COLORADO

Coverage in Colorado

FCC filings as of December 31, 2025

★ WIDEST REPORTED COVERAGE
AT&T
68.6%

AT&T reports 4G LTE or 5G across 68.6% of Colorado outdoors and 41.3% in a moving car.

Outdoor
68.6%
In car
41.3%

AT&T vs T-Mobile vs Verizon in Colorado

#1
AT&T
Reported coverage, % of area
Outdoor
68.6%
In car
41.3%
#2
Verizon
Reported coverage, % of area
Outdoor
58.1%
In car
18%
#3
T-Mobile
Reported coverage, % of area
Outdoor
50.7%
In car
19.3%

Outdoor is the share of the area where the carrier reports 4G LTE or 5G to a phone standing still outdoors; in car is the share it reports to a phone in a moving vehicle, which is always lower. Indoor signal is not part of the FCC filing and can be weaker than either.

4G and 5G across all carriers in Colorado

4G LTE
76.2%
5G 7/1
50.6%
5G 35/3
37.7%

Share of Colorado's area where at least one carrier reports each technology outdoors. "5G 7/1" means 5G of at least 7 Mbps down and 1 Mbps up, "5G 35/3" at least 35/3 Mbps, the two speed tiers the FCC publishes. The FCC summary does not split 5G by carrier.

Checking AT&T for your address

AT&T's filing covers the most of Colorado. A cheaper plan on a carrier that doesn't reach your street costs more than it saves, so start from coverage and pick the plan second. Every carrier's own map lets you check a street address.

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

Coverage in Colorado's largest cities

Other states