Duluth, MN 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 Duluth, MN zip codes, this guide compares the top-performing networks and the cheapest plans that use them.

Coverage rankings for Duluth, MN

AT&T currently ranks first for coverage in this area, with a coverage score of 89.6. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.


RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1AT&T89.699.3%97.7%97.0%73.1% -104 dBm
2T-Mobile89.091.2%91.2%84.8%73.8% -87 dBm
3Verizon69.699.9%99.9%29.0%19.6% -90 dBm

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


Cell phone coverage map for Duluth, MN

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 Duluth, MN

#1

AT&T

Coverage Score 89.6
In Duluth, MN
Overall
99.3%
4G LTE
97.7%
5G
97.0%
Fast 5G
73.1%
Average Signal -104 dBm
St. Louis County, MN covered 92.6%
#2

T-Mobile

Coverage Score 89.0
In Duluth, MN
Overall
91.2%
4G LTE
91.2%
5G
84.8%
Fast 5G
73.8%
Average Signal -87 dBm
St. Louis County, MN covered 53.9%
#3

Verizon

Coverage Score 69.6
In Duluth, MN
Overall
99.9%
4G LTE
99.9%
5G
29.0%
Fast 5G
19.6%
Average Signal -90 dBm
St. Louis County, MN covered 63.5%

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

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Coverage by ZIP code in Duluth, MN

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

ZIP CodeAT&TT-MobileVerizon
55802 100.0% 100.0% 98.3% 62.1% -104 dBm 98.3% 98.3% 98.3% 98.3% -79 dBm 100.0% 100.0% 87.9% 69.0% -88 dBm
55803 99.1% 99.1% 51.5% 35.4% -112 dBm 69.0% 69.0% 47.3% 25.5% -98 dBm 46.5% 46.5% 0.7% 0.4% -100 dBm
55804 98.7% 98.7% 80.7% 49.5% -113 dBm 68.1% 68.1% 51.1% 28.9% -97 dBm 77.7% 77.7% 4.3% 2.4% -97 dBm
55805 100.0% 100.0% 100.0% 78.8% -99 dBm 100.0% 100.0% 100.0% 100.0% -76 dBm 100.0% 100.0% 84.8% 72.7% -85 dBm
55810 99.9% 99.7% 99.5% 70.7% -105 dBm 97.2% 97.2% 91.4% 68.9% -91 dBm 99.9% 99.9% 19.4% 12.2% -91 dBm
55811 100.0% 100.0% 94.1% 63.0% -106 dBm 94.0% 94.0% 85.4% 68.6% -90 dBm 99.6% 99.6% 17.5% 10.2% -95 dBm
55812 100.0% 100.0% 100.0% 95.6% -98 dBm 100.0% 100.0% 100.0% 100.0% -84 dBm 100.0% 100.0% 64.4% 53.3% -86 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 Duluth, MN 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.