Adams County, CO Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Adams County, CO

Coverage rankings for Adams County, CO

AT&T currently ranks first for coverage in this area, with a coverage score of 82.8. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1AT&T82.899.9%99.9%72.9%58.7% -110 dBm
2Verizon73.489.7%89.6%56.7%35.8% -96 dBm
3T-Mobile61.664.1%64.1%48.2%36.5% -93 dBm

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

Cell phone coverage map for Adams County, CO

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 Adams County, CO

#1

AT&T

Coverage Score 82.8
In Adams County, CO
Overall
99.9%
4G LTE
99.9%
5G
72.9%
Fast 5G
58.7%
Average Signal -110 dBm
#2

Verizon

Coverage Score 73.4
In Adams County, CO
Overall
89.7%
4G LTE
89.6%
5G
56.7%
Fast 5G
35.8%
Average Signal -96 dBm
#3

T-Mobile

Coverage Score 61.6
In Adams County, CO
Overall
64.1%
4G LTE
64.1%
5G
48.2%
Fast 5G
36.5%
Average Signal -93 dBm
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Coverage by city in Adams County, CO

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

CityVerizonAT&TT-Mobile
Bennett, CO 100.0% 100.0% 97.5% 90.7% -84 dBm 100.0% 100.0% 100.0% 98.1% -95 dBm 100.0% 100.0% 100.0% 96.3% -77 dBm
Berkley, CO 100.0% 100.0% 100.0% 100.0% -81 dBm 100.0% 100.0% 98.9% 75.9% -100 dBm 100.0% 100.0% 100.0% 98.9% -78 dBm
Brighton, CO 100.0% 100.0% 99.8% 99.2% -81 dBm 100.0% 100.0% 98.6% 67.3% -96 dBm 100.0% 100.0% 100.0% 97.6% -82 dBm
Commerce City, CO 100.0% 100.0% 99.6% 97.3% -82 dBm 100.0% 99.9% 97.8% 72.7% -103 dBm 99.8% 99.8% 99.3% 95.8% -79 dBm
Derby, CO 100.0% 100.0% 100.0% 100.0% -83 dBm 100.0% 100.0% 100.0% 81.6% -95 dBm 100.0% 100.0% 100.0% 100.0% -73 dBm
Dupont, CO 99.8% 99.8% 95.5% 89.4% -87 dBm 99.5% 99.1% 91.7% 57.8% -108 dBm 98.1% 98.1% 94.1% 83.5% -86 dBm
Federal Heights, CO 100.0% 100.0% 100.0% 97.4% -82 dBm 100.0% 100.0% 100.0% 92.1% -102 dBm 100.0% 100.0% 100.0% 97.4% -76 dBm
Henderson, CO 100.0% 100.0% 100.0% 98.3% -82 dBm 100.0% 100.0% 98.6% 73.8% -101 dBm 100.0% 100.0% 100.0% 97.2% -80 dBm
North Washington, CO 100.0% 100.0% 99.1% 98.3% -80 dBm 100.0% 100.0% 100.0% 81.2% -94 dBm 100.0% 100.0% 100.0% 99.1% -75 dBm
Northglenn, CO 100.0% 100.0% 98.8% 88.6% -90 dBm 100.0% 100.0% 100.0% 78.3% -105 dBm 100.0% 100.0% 100.0% 95.2% -84 dBm
Shaw Heights, CO 100.0% 100.0% 100.0% 66.7% -85 dBm 100.0% 100.0% 100.0% 80.0% -110 dBm 100.0% 100.0% 100.0% 100.0% -83 dBm
Sherrelwood, CO 100.0% 100.0% 100.0% 83.6% -92 dBm 100.0% 100.0% 98.2% 67.3% -103 dBm 100.0% 100.0% 100.0% 100.0% -79 dBm
Thornton, CO 100.0% 100.0% 100.0% 95.2% -83 dBm 100.0% 100.0% 97.7% 79.9% -105 dBm 100.0% 100.0% 100.0% 95.6% -81 dBm
Todd Creek, CO 100.0% 100.0% 90.6% 88.3% -81 dBm 100.0% 100.0% 100.0% 85.7% -97 dBm 100.0% 100.0% 100.0% 97.3% -81 dBm
Twin Lakes, CO 100.0% 100.0% 100.0% 100.0% -80 dBm 100.0% 100.0% 100.0% 82.4% -96 dBm 100.0% 100.0% 100.0% 97.1% -79 dBm
Welby, CO 100.0% 100.0% 98.8% 90.4% -85 dBm 100.0% 100.0% 100.0% 59.0% -100 dBm 100.0% 100.0% 100.0% 96.4% -84 dBm
Westminster, CO 100.0% 100.0% 99.2% 92.4% -84 dBm 100.0% 100.0% 96.1% 72.4% -106 dBm 100.0% 100.0% 98.9% 89.8% -83 dBm
Arvada, CO 99.4% 99.4% 92.8% 74.8% -89 dBm 98.3% 98.3% 87.3% 62.2% -109 dBm 99.3% 99.3% 98.9% 91.4% -84 dBm
Aurora, CO 99.8% 99.8% 89.1% 76.3% -87 dBm 99.8% 99.8% 97.8% 75.7% -104 dBm 99.8% 99.8% 97.8% 91.9% -83 dBm
Broomfield, CO 100.0% 100.0% 99.5% 93.4% -85 dBm 100.0% 100.0% 99.1% 81.8% -104 dBm 100.0% 100.0% 99.2% 93.4% -82 dBm
Byers, CO 100.0% 100.0% 100.0% 98.1% -84 dBm 100.0% 100.0% 99.2% 82.8% -112 dBm 100.0% 100.0% 100.0% 97.3% -89 dBm
Denver, CO 99.7% 99.7% 95.0% 89.9% -90 dBm 99.7% 99.7% 93.8% 72.1% -102 dBm 98.8% 98.8% 96.5% 90.3% -80 dBm
Lochbuie, CO 100.0% 100.0% 100.0% 100.0% -79 dBm 100.0% 100.0% 100.0% 41.4% -103 dBm 100.0% 100.0% 100.0% 100.0% -75 dBm
Strasburg, CO 100.0% 100.0% 99.8% 99.4% -76 dBm 100.0% 100.0% 100.0% 86.4% -104 dBm 100.0% 100.0% 99.6% 97.9% -82 dBm
Watkins, CO 92.9% 92.9% 33.9% 21.0% -91 dBm 95.7% 95.7% 83.1% 67.9% -107 dBm 98.4% 98.4% 85.1% 78.7% -84 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 Adams County, CO 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.