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

Don’t overpay for a network that struggles where you actually use your phone.

Using FCC mobile coverage data across Johnsonburg, NJ zip codes, this guide compares the top-performing networks and the cheapest plans that use them.



Cell phone coverage map for Johnsonburg, NJ

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

Loading coverage map...


Cell phone coverage rankings by network in Johnsonburg, NJ

#1

T-Mobile

Coverage Score 64.9
In Johnsonburg, NJ
Overall
100.0%
4G LTE
100.0% avg. -103 dBm 4G LTE signal where 4G LTE coverage exists: avg. -103 dBm
5G
84.6% avg. -100 dBm 5G signal where 5G coverage exists: avg. -100 dBm
Fast 5G
3.8% avg. -100 dBm Fast 5G signal where Fast 5G coverage exists: avg. -100 dBm
Warren County, NJ covered 92.5%
#2

AT&T

Coverage Score 51.6
In Johnsonburg, NJ
Overall
96.2%
4G LTE
96.2% avg. -116 dBm 4G LTE signal where 4G LTE coverage exists: avg. -116 dBm
5G
42.3% avg. -115 dBm 5G signal where 5G coverage exists: avg. -115 dBm
Fast 5G
15.4% avg. -108 dBm Fast 5G signal where Fast 5G coverage exists: avg. -108 dBm
Warren County, NJ covered 95.1%
#3

Verizon

Coverage Score 45.2
In Johnsonburg, NJ
Overall
96.2%
4G LTE
96.2% avg. -104 dBm 4G LTE signal where 4G LTE coverage exists: avg. -104 dBm
5G
7.7% avg. -105 dBm 5G signal where 5G coverage exists: avg. -105 dBm
Fast 5G
0.0%
Warren County, NJ covered 97.8%

County coverage is shown for surrounding-area context and uses land-area only coverage.

Sponsored US Mobile

Coverage varies by neighborhood. Your carrier shouldn’t.

US Mobile lets you switch between all three major networks, so you can choose the one that works best where you actually use your phone.

Choose your network
Dark Star Light Speed Warp 5G
Unlimited plans from
$22.50/mo
Phone + home internet bundle from
$47/mo
Shop US Mobile

Pricing, network access, switching terms, and home internet availability may vary.


Coverage by ZIP code in Johnsonburg, NJ

ZIP code areas can extend beyond city limits, so this table is best used for local comparison around the city.

ZIP CodeAT&TT-MobileVerizon
07821 97.0% 97.0% 81.2% 46.8% 94.8% 94.8% 88.6% 69.0% 98.9% 98.9% 82.6% 63.7%
07825 88.3% 88.3% 69.4% 49.0% 87.4% 87.3% 76.9% 56.8% 95.3% 95.3% 38.2% 20.0%
07846 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 0.0% 100.0% 100.0% 0.0% 0.0%
07860 99.6% 99.6% 76.4% 44.4% 93.1% 93.1% 81.7% 53.5% 99.5% 99.5% 94.1% 78.7%

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 Johnsonburg, 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.