Coverage rankings for Montgomery County, MD
T-Mobile currently ranks first for coverage in this area, with a coverage score of 94.3. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.
| Rank | Carrier | Score | Overall | 4G LTE | 5G | Fast 5G | Average Signal |
|---|---|---|---|---|---|---|---|
| 1 | T-Mobile | 94.3 | 97.3% | 97.2% | 92.7% | 80.0% | -84 dBm |
| 2 | AT&T | 87.0 | 99.8% | 99.7% | 91.9% | 64.1% | -107 dBm |
| 3 | Verizon | 78.5 | 99.0% | 99.0% | 57.4% | 37.7% | -95 dBm |
Scores include coverage area, network type, and average signal strength.
Cell phone coverage map for Montgomery County, MD
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
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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 Montgomery County, MD
#1
T-Mobile
Coverage Score 94.3
In Montgomery County, MD
- Overall
- 97.3%
- 4G LTE
- 97.2%
- 5G
- 92.7%
- Fast 5G
- 80.0%
Average Signal -84 dBm
#2
AT&T
Coverage Score 87.0
In Montgomery County, MD
- Overall
- 99.8%
- 4G LTE
- 99.7%
- 5G
- 91.9%
- Fast 5G
- 64.1%
Average Signal -107 dBm
#3
Verizon
Coverage Score 78.5
In Montgomery County, MD
- Overall
- 99.0%
- 4G LTE
- 99.0%
- 5G
- 57.4%
- Fast 5G
- 37.7%
Average Signal -95 dBm
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Coverage by city in Montgomery County, MD
Cities and towns are shown for county-level comparison. Coverage percentages use land-area only coverage.
| City | Verizon | AT&T | T-Mobile |
|---|---|---|---|
| Ashton, MD | 100.0% 100.0% 54.3% 37.8% -93 dBm | 100.0% 100.0% 82.7% 60.6% -112 dBm | 100.0% 100.0% 100.0% 98.4% -81 dBm |
| Ashton-Sandy Spring, MD | 100.0% 100.0% 46.5% 24.6% -98 dBm | 100.0% 100.0% 73.1% 53.8% -110 dBm | 99.6% 99.6% 95.4% 85.0% -86 dBm |
| Aspen Hill, MD | 100.0% 100.0% 70.7% 39.7% -98 dBm | 100.0% 99.2% 99.6% 78.7% -102 dBm | 100.0% 99.6% 98.7% 89.5% -84 dBm |
| Barnesville, MD | 100.0% 100.0% 0.0% 0.0% -94 dBm | 100.0% 100.0% 50.0% 30.0% -118 dBm | 100.0% 100.0% 100.0% 100.0% -86 dBm |
| Beallsville, MD | 100.0% 100.0% 23.7% 9.2% -88 dBm | 100.0% 100.0% 90.8% 76.3% -111 dBm | 100.0% 100.0% 57.9% 32.9% -93 dBm |
| Bethesda, MD | 100.0% 100.0% 86.7% 61.4% -95 dBm | 100.0% 100.0% 99.1% 71.7% -98 dBm | 100.0% 100.0% 100.0% 99.4% -79 dBm |
| Boyds, MD | 98.5% 98.5% 33.6% 17.2% -97 dBm | 99.9% 99.9% 88.6% 69.1% -110 dBm | 97.8% 97.5% 93.5% 71.7% -86 dBm |
| Brinklow, MD | 100.0% 100.0% 54.3% 37.8% -93 dBm | 100.0% 100.0% 82.7% 60.6% -112 dBm | 100.0% 100.0% 100.0% 98.4% -81 dBm |
| Brookeville, MD | 100.0% 100.0% 66.7% 66.7% -90 dBm | 100.0% 100.0% 66.7% 0.0% -113 dBm | 100.0% 100.0% 100.0% 100.0% -83 dBm |
| Brookmont, MD | 100.0% 100.0% 61.8% 23.5% -97 dBm | 100.0% 94.1% 97.1% 67.6% -104 dBm | 100.0% 100.0% 100.0% 97.1% -83 dBm |
| Burnt Mills, MD | 100.0% 100.0% 100.0% 83.3% -86 dBm | 100.0% 100.0% 100.0% 55.6% -100 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| Burtonsville, MD | 99.0% 99.0% 40.1% 20.3% -94 dBm | 100.0% 100.0% 95.0% 54.0% -108 dBm | 99.5% 99.5% 94.1% 83.7% -83 dBm |
| Cabin John, MD | 100.0% 100.0% 93.5% 71.0% -94 dBm | 100.0% 100.0% 100.0% 90.3% -100 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| Calverton, MD | 100.0% 100.0% 96.6% 78.4% -89 dBm | 100.0% 100.0% 100.0% 84.5% -103 dBm | 100.0% 100.0% 100.0% 98.3% -74 dBm |
| Chevy Chase, MD | 100.0% 100.0% 85.7% 75.2% -85 dBm | 100.0% 100.0% 100.0% 71.4% -98 dBm | 100.0% 100.0% 100.0% 100.0% -76 dBm |
| Chevy Chase Census Place 2416620, MD | 100.0% 100.0% 40.0% 40.0% -73 dBm | 100.0% 100.0% 100.0% 80.0% -99 dBm | 100.0% 100.0% 100.0% 100.0% -69 dBm |
| Chevy Chase Census Place 2416625, MD | 100.0% 100.0% 98.4% 92.2% -86 dBm | 100.0% 100.0% 100.0% 78.1% -96 dBm | 100.0% 100.0% 100.0% 100.0% -75 dBm |
| Chevy Chase Section Five, MD | 100.0% 100.0% 0.0% 0.0% -70 dBm | 100.0% 100.0% 100.0% 66.7% -103 dBm | 100.0% 100.0% 100.0% 100.0% -77 dBm |
| Chevy Chase Section Three, MD | 100.0% 100.0% 0.0% 0.0% -70 dBm | 100.0% 100.0% 100.0% 50.0% -110 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| Chevy Chase View, MD | 100.0% 100.0% 100.0% 0.0% -115 dBm | 100.0% 100.0% 100.0% 50.0% -105 dBm | 100.0% 100.0% 100.0% 100.0% -85 dBm |
| Chevy Chase Village, MD | 100.0% 100.0% 80.0% 60.0% -85 dBm | 100.0% 100.0% 100.0% 60.0% -101 dBm | 100.0% 100.0% 100.0% 100.0% -85 dBm |
| Clarksburg, MD | 100.0% 100.0% 88.5% 66.3% -93 dBm | 99.6% 99.6% 94.7% 71.2% -108 dBm | 99.2% 99.2% 98.8% 94.7% -82 dBm |
| Cloverly, MD | 99.2% 99.2% 61.1% 38.9% -98 dBm | 100.0% 100.0% 99.2% 76.6% -110 dBm | 99.2% 99.2% 97.2% 69.0% -89 dBm |
| Colesville, MD | 100.0% 100.0% 57.4% 23.3% -99 dBm | 100.0% 100.0% 100.0% 70.5% -103 dBm | 100.0% 100.0% 96.1% 89.1% -86 dBm |
| Damascus, MD | 100.0% 100.0% 63.2% 34.5% -102 dBm | 100.0% 100.0% 98.6% 61.8% -108 dBm | 99.2% 99.2% 97.2% 83.3% -86 dBm |
| Darnestown, MD | 95.7% 95.7% 22.9% 10.1% -101 dBm | 99.8% 99.8% 70.5% 32.4% -113 dBm | 87.9% 87.0% 77.1% 55.8% -91 dBm |
| Derwood, MD | 100.0% 100.0% 94.1% 88.2% -83 dBm | 100.0% 100.0% 100.0% 52.9% -104 dBm | 100.0% 100.0% 100.0% 100.0% -75 dBm |
| Dickerson, MD | 96.9% 96.7% 13.4% 5.3% -94 dBm | 98.2% 97.9% 85.8% 61.9% -111 dBm | 88.4% 88.4% 71.1% 47.4% -91 dBm |
| Fairland, MD | 100.0% 100.0% 79.5% 63.1% -93 dBm | 100.0% 100.0% 97.5% 81.1% -105 dBm | 97.5% 97.5% 96.7% 88.5% -83 dBm |
| Flower Hill, MD | 100.0% 100.0% 94.2% 67.3% -96 dBm | 100.0% 100.0% 100.0% 88.5% -103 dBm | 100.0% 100.0% 100.0% 96.2% -82 dBm |
| Forest Glen, MD | 100.0% 100.0% 84.6% 57.7% -98 dBm | 100.0% 100.0% 100.0% 61.5% -102 dBm | 100.0% 100.0% 100.0% 100.0% -75 dBm |
| Four Corners, MD | 100.0% 100.0% 94.7% 60.5% -95 dBm | 100.0% 100.0% 100.0% 65.8% -99 dBm | 97.4% 97.4% 97.4% 97.4% -80 dBm |
| Friendship Heights Village, MD | 100.0% 100.0% 100.0% 100.0% -75 dBm | 100.0% 100.0% 100.0% 50.0% -95 dBm | 100.0% 100.0% 100.0% 100.0% -65 dBm |
| Gaithersburg, MD | 100.0% 100.0% 90.2% 76.7% -88 dBm | 100.0% 100.0% 99.6% 75.2% -100 dBm | 100.0% 100.0% 100.0% 99.2% -76 dBm |
| Garrett Park, MD | 100.0% 100.0% 100.0% 28.6% -104 dBm | 100.0% 100.0% 100.0% 71.4% -107 dBm | 100.0% 100.0% 100.0% 100.0% -89 dBm |
| Germantown, MD | 100.0% 100.0% 87.2% 61.8% -94 dBm | 100.0% 100.0% 91.4% 59.7% -111 dBm | 100.0% 100.0% 99.8% 98.4% -78 dBm |
| Glen Echo, MD | 100.0% 100.0% 66.7% 0.0% -103 dBm | 100.0% 100.0% 100.0% 66.7% -110 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| Glenmont, MD | 100.0% 100.0% 91.7% 65.3% -94 dBm | 100.0% 100.0% 100.0% 83.3% -100 dBm | 100.0% 100.0% 100.0% 100.0% -78 dBm |
| Hillandale, MD | 100.0% 100.0% 54.3% 17.4% -94 dBm | 100.0% 100.0% 97.8% 78.3% -100 dBm | 100.0% 100.0% 100.0% 95.7% -82 dBm |
| Kemp Mill, MD | 100.0% 100.0% 84.1% 57.1% -97 dBm | 100.0% 100.0% 100.0% 68.3% -100 dBm | 100.0% 100.0% 100.0% 96.8% -80 dBm |
| Kensington, MD | 100.0% 100.0% 100.0% 90.9% -82 dBm | 100.0% 100.0% 100.0% 72.7% -97 dBm | 100.0% 100.0% 100.0% 100.0% -66 dBm |
| Layhill, MD | 100.0% 100.0% 83.3% 64.3% -93 dBm | 100.0% 100.0% 100.0% 78.6% -100 dBm | 100.0% 100.0% 97.6% 85.7% -85 dBm |
| Laytonsville, MD | 100.0% 100.0% 100.0% 92.6% -81 dBm | 100.0% 100.0% 96.3% 88.9% -110 dBm | 100.0% 100.0% 100.0% 100.0% -70 dBm |
| Leisure World, MD | 100.0% 100.0% 96.6% 65.5% -100 dBm | 100.0% 100.0% 100.0% 89.7% -100 dBm | 100.0% 100.0% 100.0% 100.0% -78 dBm |
| Martin’s Additions, MD | 100.0% 100.0% 33.3% 33.3% -83 dBm | 100.0% 100.0% 100.0% 33.3% -110 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| Montgomery Village, MD | 100.0% 100.0% 89.3% 62.1% -95 dBm | 100.0% 100.0% 99.0% 91.3% -99 dBm | 100.0% 100.0% 100.0% 86.4% -82 dBm |
| North Bethesda, MD | 100.0% 100.0% 86.0% 65.3% -93 dBm | 100.0% 100.0% 98.2% 75.7% -97 dBm | 100.0% 100.0% 100.0% 99.5% -78 dBm |
| North Chevy Chase, MD | 100.0% 100.0% 100.0% 100.0% -85 dBm | 100.0% 100.0% 100.0% 0.0% -100 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| North Kensington, MD | 100.0% 100.0% 78.9% 52.6% -91 dBm | 100.0% 100.0% 100.0% 60.5% -104 dBm | 100.0% 100.0% 100.0% 100.0% -77 dBm |
| North Potomac, MD | 100.0% 100.0% 84.9% 61.4% -93 dBm | 100.0% 100.0% 96.4% 59.0% -107 dBm | 100.0% 100.0% 99.4% 94.6% -83 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 Montgomery County, MD 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.