Marion County, IN Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Marion County, IN

Coverage rankings for Marion County, IN

T-Mobile currently ranks first for coverage in this area, with a coverage score of 99.3. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile99.3100.0%100.0%99.9%98.3% -78 dBm
2Verizon94.3100.0%100.0%90.3%76.8% -86 dBm
3AT&T92.999.8%99.7%99.3%81.5% -100 dBm

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

Cell phone coverage map for Marion County, IN

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 Marion County, IN

#1

T-Mobile

Coverage Score 99.3
In Marion County, IN
Overall
100.0%
4G LTE
100.0%
5G
99.9%
Fast 5G
98.3%
Average Signal -78 dBm
#2

Verizon

Coverage Score 94.3
In Marion County, IN
Overall
100.0%
4G LTE
100.0%
5G
90.3%
Fast 5G
76.8%
Average Signal -86 dBm
#3

AT&T

Coverage Score 92.9
In Marion County, IN
Overall
99.8%
4G LTE
99.7%
5G
99.3%
Fast 5G
81.5%
Average Signal -100 dBm
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Coverage by city in Marion County, IN

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

CityVerizonAT&TT-Mobile
Beech Grove, IN 100.0% 100.0% 93.6% 70.9% -87 dBm 100.0% 100.0% 100.0% 84.5% -101 dBm 100.0% 100.0% 100.0% 100.0% -71 dBm
Clermont, IN 100.0% 100.0% 75.0% 50.0% -92 dBm 100.0% 100.0% 100.0% 93.8% -93 dBm 100.0% 100.0% 100.0% 93.8% -86 dBm
Crows Nest, IN 100.0% 100.0% 20.0% 0.0% -98 dBm 100.0% 100.0% 90.0% 70.0% -113 dBm 100.0% 100.0% 100.0% 100.0% -89 dBm
Homecroft, IN 100.0% 100.0% 100.0% 100.0% -83 dBm 100.0% 100.0% 100.0% 100.0% -98 dBm 100.0% 100.0% 100.0% 100.0% -82 dBm
Indianapolis city (balance), IN 100.0% 100.0% 90.3% 76.9% -86 dBm 99.8% 99.7% 99.3% 81.2% -100 dBm 100.0% 100.0% 99.9% 98.4% -78 dBm
Lawrence, IN 100.0% 100.0% 90.3% 76.5% -86 dBm 100.0% 100.0% 100.0% 83.5% -98 dBm 100.0% 100.0% 100.0% 99.2% -75 dBm
Meridian Hills, IN 100.0% 100.0% 66.7% 36.1% -94 dBm 100.0% 100.0% 97.2% 83.3% -96 dBm 100.0% 100.0% 100.0% 66.7% -96 dBm
North Crows Nest, IN 100.0% 100.0% 0.0% 0.0% -90 dBm 100.0% 100.0% 100.0% 0.0% -110 dBm 100.0% 100.0% 100.0% 100.0% -90 dBm
Rocky Ripple, IN 100.0% 100.0% 28.6% 0.0% -99 dBm 100.0% 100.0% 100.0% 57.1% -117 dBm 100.0% 100.0% 100.0% 100.0% -90 dBm
Southport, IN 100.0% 100.0% 100.0% 87.5% -87 dBm 100.0% 100.0% 100.0% 93.8% -92 dBm 100.0% 100.0% 100.0% 100.0% -76 dBm
Speedway, IN 100.0% 100.0% 100.0% 98.3% -82 dBm 100.0% 100.0% 100.0% 89.3% -93 dBm 100.0% 100.0% 100.0% 100.0% -70 dBm
Spring Hill, IN 100.0% 100.0% 100.0% 75.0% -95 dBm 75.0% 75.0% 75.0% 50.0% -110 dBm 100.0% 100.0% 100.0% 100.0% -90 dBm
Warren Park, IN 100.0% 100.0% 100.0% 100.0% -74 dBm 100.0% 100.0% 100.0% 90.9% -96 dBm 100.0% 100.0% 100.0% 100.0% -72 dBm
Williams Creek, IN 100.0% 100.0% 14.3% 0.0% -97 dBm 100.0% 100.0% 100.0% 100.0% -99 dBm 100.0% 100.0% 100.0% 85.7% -93 dBm
Wynnedale, IN 100.0% 100.0% 100.0% 60.0% -98 dBm 60.0% 60.0% 60.0% 20.0% -117 dBm 100.0% 100.0% 100.0% 100.0% -86 dBm
Avon, IN 100.0% 100.0% 95.3% 84.6% -85 dBm 99.8% 99.0% 99.6% 82.0% -100 dBm 100.0% 100.0% 100.0% 99.2% -78 dBm
Brownsburg, IN 100.0% 100.0% 97.9% 91.0% -80 dBm 100.0% 100.0% 100.0% 81.6% -94 dBm 100.0% 100.0% 100.0% 100.0% -76 dBm
Carmel, IN 99.9% 99.9% 85.5% 70.1% -87 dBm 100.0% 100.0% 99.4% 79.4% -100 dBm 100.0% 100.0% 100.0% 98.7% -81 dBm
Cumberland, IN 100.0% 100.0% 100.0% 86.7% -82 dBm 100.0% 100.0% 100.0% 80.7% -101 dBm 100.0% 100.0% 100.0% 96.4% -82 dBm
Fishers, IN 100.0% 100.0% 94.9% 85.5% -83 dBm 99.9% 99.8% 99.8% 86.1% -98 dBm 100.0% 100.0% 100.0% 99.9% -79 dBm
Greenwood, IN 100.0% 100.0% 99.2% 95.2% -82 dBm 100.0% 99.9% 100.0% 79.4% -99 dBm 100.0% 100.0% 100.0% 100.0% -78 dBm
Mccordsville, IN 100.0% 100.0% 99.5% 94.5% -85 dBm 100.0% 100.0% 100.0% 54.4% -102 dBm 100.0% 100.0% 100.0% 100.0% -77 dBm
Plainfield, IN 100.0% 100.0% 89.9% 71.0% -88 dBm 99.9% 99.6% 99.7% 85.0% -103 dBm 100.0% 100.0% 100.0% 99.1% -79 dBm
Pleasant View, IN 100.0% 100.0% 100.0% 100.0% -83 dBm 100.0% 100.0% 100.0% 72.7% -86 dBm 100.0% 100.0% 100.0% 100.0% -68 dBm
Zionsville, IN 100.0% 100.0% 95.6% 81.0% -91 dBm 100.0% 99.7% 99.6% 74.6% -104 dBm 100.0% 100.0% 99.5% 91.4% -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 Marion County, IN 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.