Fairfax City County, VA Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Fairfax City County, VA

Coverage rankings for Fairfax City County, VA

T-Mobile currently ranks first for coverage in this area, with a coverage score of 99.1. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile99.1100.0%100.0%100.0%100.0% -80 dBm
2Verizon90.9100.0%100.0%85.4%65.0% -88 dBm
3AT&T90.5100.0%100.0%100.0%68.8% -99 dBm

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

Cell phone coverage map for Fairfax City County, VA

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 Fairfax City County, VA

#1

T-Mobile

Coverage Score 99.1
In Fairfax City County, VA
Overall
100.0%
4G LTE
100.0%
5G
100.0%
Fast 5G
100.0%
Average Signal -80 dBm
#2

Verizon

Coverage Score 90.9
In Fairfax City County, VA
Overall
100.0%
4G LTE
100.0%
5G
85.4%
Fast 5G
65.0%
Average Signal -88 dBm
#3

AT&T

Coverage Score 90.5
In Fairfax City County, VA
Overall
100.0%
4G LTE
100.0%
5G
100.0%
Fast 5G
68.8%
Average Signal -99 dBm
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Coverage by city in Fairfax City County, VA

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

CityVerizonAT&TT-Mobile
Fairfax, VA 100.0% 100.0% 85.4% 65.0% -88 dBm 100.0% 100.0% 100.0% 68.8% -99 dBm 100.0% 100.0% 100.0% 100.0% -80 dBm
Fair Oaks, VA 100.0% 100.0% 89.4% 72.4% -87 dBm 100.0% 100.0% 100.0% 80.5% -97 dBm 100.0% 100.0% 100.0% 100.0% -74 dBm
George Mason, VA 100.0% 100.0% 65.6% 53.1% -91 dBm 98.4% 98.4% 95.3% 68.8% -102 dBm 96.9% 96.9% 87.5% 62.5% -88 dBm
Long Branch, VA 100.0% 100.0% 72.1% 55.7% -87 dBm 100.0% 100.0% 98.4% 73.8% -100 dBm 100.0% 100.0% 100.0% 98.4% -77 dBm
Mantua, VA 100.0% 100.0% 38.3% 15.0% -96 dBm 96.7% 96.7% 86.7% 33.3% -113 dBm 100.0% 100.0% 100.0% 90.0% -90 dBm
Merrifield, VA 100.0% 100.0% 80.0% 65.7% -88 dBm 100.0% 100.0% 100.0% 81.4% -96 dBm 100.0% 100.0% 100.0% 98.6% -77 dBm
Oakton, VA 99.2% 99.2% 48.8% 37.8% -93 dBm 100.0% 100.0% 99.6% 72.4% -106 dBm 98.8% 98.8% 95.1% 76.0% -88 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 Fairfax City County, VA 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.