Warren County, NJ Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Warren County, NJ

Cell phone coverage map for Warren County, NJ

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Coverage Key
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Darker areas mean the carrier covers more of that location.

Map data © OpenStreetMap contributors, © OpenMapTiles. Basemap by OpenFreeMap. Rendered with MapLibre. FCC BDC mobile coverage processed by CompareWirelessCarriers.

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Cell phone coverage rankings by network in Warren County, NJ

#1

T-Mobile

Coverage Score 87.7
In Warren County, NJ
Overall
92.5%
4G LTE
92.4% avg. -91 dBm 4G LTE signal where 4G LTE coverage exists: avg. -91 dBm
5G
85.0% avg. -86 dBm 5G signal where 5G coverage exists: avg. -86 dBm
Fast 5G
68.1% avg. -83 dBm Fast 5G signal where Fast 5G coverage exists: avg. -83 dBm
#2

AT&T

Coverage Score 77.3
In Warren County, NJ
Overall
95.1%
4G LTE
95.1% avg. -100 dBm 4G LTE signal where 4G LTE coverage exists: avg. -100 dBm
5G
80.8% avg. -106 dBm 5G signal where 5G coverage exists: avg. -106 dBm
Fast 5G
61.2% avg. -103 dBm Fast 5G signal where Fast 5G coverage exists: avg. -103 dBm
#3

Verizon

Coverage Score 75.0
In Warren County, NJ
Overall
97.8%
4G LTE
97.7% avg. -96 dBm 4G LTE signal where 4G LTE coverage exists: avg. -96 dBm
5G
55.8% avg. -94 dBm 5G signal where 5G coverage exists: avg. -94 dBm
Fast 5G
39.4% avg. -91 dBm Fast 5G signal where Fast 5G coverage exists: avg. -91 dBm
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Coverage by city in Warren County, NJ

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

CityVerizonAT&TT-Mobile
Allamuchy, NJ 96.9% 96.9% 43.1% 20.0% 100.0% 100.0% 92.3% 50.8% 100.0% 100.0% 100.0% 66.2%
Alpha, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Anderson, NJ 100.0% 100.0% 60.0% 45.0% 100.0% 100.0% 100.0% 75.0% 100.0% 100.0% 100.0% 100.0%
Asbury, NJ 94.4% 88.9% 66.7% 33.3% 100.0% 100.0% 83.3% 5.6% 100.0% 94.4% 100.0% 50.0%
Beattystown, NJ 100.0% 100.0% 93.3% 77.3% 100.0% 100.0% 86.7% 57.3% 100.0% 100.0% 100.0% 94.7%
Belvidere, NJ 100.0% 100.0% 97.3% 56.8% 100.0% 100.0% 100.0% 89.2% 100.0% 100.0% 100.0% 100.0%
Blairstown, NJ 100.0% 100.0% 18.2% 0.0% 100.0% 100.0% 100.0% 81.8% 100.0% 100.0% 100.0% 54.5%
Brainards, NJ 100.0% 100.0% 100.0% 80.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Brass Castle, NJ 100.0% 100.0% 47.9% 25.4% 100.0% 100.0% 90.1% 76.1% 100.0% 100.0% 97.2% 81.7%
Bridgeville, NJ 100.0% 100.0% 45.8% 20.8% 100.0% 100.0% 100.0% 91.7% 100.0% 100.0% 95.8% 87.5%
Broadway, NJ 100.0% 100.0% 75.0% 0.0% 100.0% 100.0% 75.0% 62.5% 100.0% 100.0% 100.0% 100.0%
Brookfield, NJ 100.0% 100.0% 81.0% 66.7% 100.0% 100.0% 100.0% 90.5% 100.0% 100.0% 100.0% 100.0%
Buttzville, NJ 100.0% 100.0% 15.0% 15.0% 100.0% 100.0% 100.0% 80.0% 100.0% 100.0% 100.0% 100.0%
Columbia, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Delaware, NJ 90.9% 90.9% 0.0% 0.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Delaware Park, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Finesville, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 98.0% 90.2% 90.2% 82.4% 60.8%
Frelinghuysen, NJ 98.9% 98.9% 44.5% 17.8% 98.1% 98.1% 72.5% 47.7% 98.2% 97.9% 91.2% 63.6%
Great Meadows, NJ 100.0% 100.0% 97.4% 87.2% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 97.4% 92.3%
Greenwich, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Hackettstown, NJ 100.0% 100.0% 93.2% 87.5% 100.0% 100.0% 100.0% 89.8% 100.0% 100.0% 98.9% 81.8%
Hainesburg, NJ 97.3% 97.3% 27.0% 10.8% 100.0% 100.0% 100.0% 94.6% 100.0% 100.0% 100.0% 97.3%
Hardwick, NJ 91.8% 91.8% 25.1% 12.7% 73.9% 73.9% 45.1% 24.3% 70.9% 70.9% 56.4% 36.9%
Harmony, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 96.2% 100.0% 100.0% 100.0% 100.0%
Hope, NJ 100.0% 100.0% 95.0% 90.0% 100.0% 100.0% 95.0% 95.0% 100.0% 100.0% 100.0% 50.0%
Hutchinson, NJ 100.0% 100.0% 91.3% 87.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 91.3%
Independence, NJ 99.6% 99.6% 63.7% 45.1% 98.1% 98.1% 87.5% 67.6% 98.7% 98.5% 95.8% 83.3%
Johnsonburg, NJ 96.2% 96.2% 7.7% 0.0% 96.2% 96.2% 42.3% 15.4% 100.0% 100.0% 84.6% 3.8%
Knowlton, NJ 98.0% 97.8% 37.6% 20.2% 99.5% 99.5% 85.8% 69.9% 98.0% 98.0% 93.8% 78.3%
Liberty, NJ 93.4% 93.4% 29.6% 15.0% 93.7% 93.7% 61.0% 46.0% 63.8% 63.4% 44.9% 30.3%
Lopatcong, NJ 100.0% 100.0% 100.0% 98.3% 100.0% 100.0% 98.3% 92.8% 100.0% 100.0% 99.4% 93.3%
Lopatcong Overlook, NJ 100.0% 100.0% 100.0% 88.9% 100.0% 100.0% 100.0% 88.9% 100.0% 100.0% 100.0% 100.0%
Mansfield, NJ 96.4% 96.4% 55.6% 39.0% 91.9% 91.9% 65.5% 44.4% 93.0% 93.0% 85.2% 65.5%
Marksboro, NJ 100.0% 100.0% 82.4% 49.0% 100.0% 100.0% 82.4% 68.6% 100.0% 100.0% 100.0% 90.2%
Mount Hermon, NJ 100.0% 100.0% 47.8% 4.3% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Mountain Lake, NJ 70.4% 70.4% 14.8% 0.0% 92.6% 92.6% 29.6% 18.5% 81.5% 81.5% 25.9% 0.0%
New Village, NJ 100.0% 100.0% 87.0% 69.6% 100.0% 100.0% 100.0% 87.0% 100.0% 100.0% 100.0% 100.0%
Oxford, NJ 100.0% 100.0% 17.6% 11.8% 100.0% 100.0% 94.1% 82.4% 100.0% 100.0% 100.0% 88.2%
Panther Valley, NJ 100.0% 100.0% 70.4% 43.7% 98.6% 98.6% 91.5% 38.0% 100.0% 100.0% 100.0% 95.8%
Phillipsburg, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 96.2% 100.0% 100.0% 100.0% 100.0%
Pohatcong, NJ 100.0% 100.0% 99.1% 96.0% 100.0% 100.0% 99.4% 93.3% 97.6% 97.6% 95.7% 88.4%
Port Colden, NJ 100.0% 100.0% 42.9% 21.4% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Port Murray, NJ 100.0% 100.0% 79.2% 45.8% 95.8% 95.8% 87.5% 62.5% 100.0% 100.0% 100.0% 95.8%
Silver Lake, NJ 100.0% 100.0% 23.3% 16.7% 100.0% 100.0% 93.3% 50.0% 100.0% 100.0% 100.0% 20.0%
Stewartsville, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 96.0% 100.0% 100.0% 100.0% 100.0%
Upper Pohatcong, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Upper Stewartsville, NJ 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 71.4% 100.0% 100.0% 100.0% 100.0%
Vienna, NJ 100.0% 100.0% 51.4% 28.6% 100.0% 100.0% 87.1% 82.9% 95.7% 95.7% 91.4% 61.4%
Washington, NJ 100.0% 100.0% 97.8% 82.6% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
White, NJ 97.1% 97.0% 40.6% 22.9% 99.2% 99.2% 87.8% 76.7% 89.8% 89.8% 77.7% 58.8%

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 2026. “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 Warren County, NJ 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.