Carrierlytics City Coverage Guide

Piney Point, MD 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 Piney Point, MD ZIP codes, Carrierlytics compares the top-performing networks and the cheapest plans that use them.



Cell phone coverage map for Piney Point, 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
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 Carrierlytics.

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Cell phone coverage rankings by network in Piney Point, MD

#1

T-Mobile

Coverage Score 60.0
In Piney Point, MD
Overall
79.4%
4G LTE
79.4% avg. -103 dBm 4G LTE signal where 4G LTE coverage exists: avg. -103 dBm
5G
61.8% avg. -98 dBm 5G signal where 5G coverage exists: avg. -98 dBm
Fast 5G
17.6% avg. -93 dBm Fast 5G signal where Fast 5G coverage exists: avg. -93 dBm
St. Mary’s County, MD covered 86.6%
#2

AT&T

Coverage Score 57.1
In Piney Point, MD
Overall
100.0%
4G LTE
100.0% avg. -118 dBm 4G LTE signal where 4G LTE coverage exists: avg. -118 dBm
5G
55.9% avg. -119 dBm 5G signal where 5G coverage exists: avg. -119 dBm
Fast 5G
32.4% avg. -118 dBm Fast 5G signal where Fast 5G coverage exists: avg. -118 dBm
St. Mary’s County, MD covered 98.2%
#3

Verizon

Coverage Score 51.0
In Piney Point, MD
Overall
100.0%
4G LTE
100.0% avg. -79 dBm 4G LTE signal where 4G LTE coverage exists: avg. -79 dBm
5G
8.8% avg. -117 dBm 5G signal where 5G coverage exists: avg. -117 dBm
Fast 5G
0.0%
St. Mary’s County, MD covered 98.3%

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

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Best phone plans for Piney Point, MD

Best phone plans on T-Mobile's network for Piney Point, MD

60.0 T-Mobile coverage score Ranked #1 in Piney Point, MD
Best family plan
79.5 Value Score

T-Mobile Better Value

Fair Value

Price
$140.01/mo for 3 lines ($46.67/line)
Data
Unlimited
Hotspot
Unlimited
View plan
See all plans on T-Mobile Compare all phone plans

Coverage by ZIP code in Piney Point, MD

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

ZIP Code AT&T T-Mobile Verizon
20674 97.6% 97.6% 65.9% 43.9% 87.8% 87.8% 73.2% 36.6% 100.0% 100.0% 4.9% 0.0%
20690 100.0% 100.0% 76.9% 51.3% 87.2% 87.2% 66.7% 28.2% 100.0% 100.0% 2.6% 0.0%

About The Coverage Data

Coverage and signal estimates are derived by Carrierlytics 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 Piney Point, 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.