Coverage rankings for Cook County, IL
T-Mobile currently ranks first for coverage in this area, with a coverage score of 99.1. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.
| Rank | Carrier | Score | Overall | 4G LTE | 5G | Fast 5G | Average Signal |
|---|---|---|---|---|---|---|---|
| 1 | T-Mobile | 99.1 | 99.9% | 99.9% | 99.2% | 96.6% | -77 dBm |
| 2 | Verizon | 97.4 | 100.0% | 100.0% | 99.1% | 92.0% | -87 dBm |
| 3 | AT&T | 93.0 | 99.9% | 99.9% | 99.2% | 78.3% | -97 dBm |
Scores include coverage area, network type, and average signal strength.
Cell phone coverage map for Cook County, IL
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 Cook County, IL
#1
T-Mobile
Coverage Score 99.1
In Cook County, IL
- Overall
- 99.9%
- 4G LTE
- 99.9%
- 5G
- 99.2%
- Fast 5G
- 96.6%
Average Signal -77 dBm
#2
Verizon
Coverage Score 97.4
In Cook County, IL
- Overall
- 100.0%
- 4G LTE
- 100.0%
- 5G
- 99.1%
- Fast 5G
- 92.0%
Average Signal -87 dBm
#3
AT&T
Coverage Score 93.0
In Cook County, IL
- Overall
- 99.9%
- 4G LTE
- 99.9%
- 5G
- 99.2%
- Fast 5G
- 78.3%
Average Signal -97 dBm
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Coverage by city in Cook County, IL
Cities and towns are shown for county-level comparison. Coverage percentages use land-area only coverage.
| City | Verizon | AT&T | T-Mobile |
|---|---|---|---|
| Alsip, IL | 100.0% 100.0% 100.0% 98.8% -82 dBm | 100.0% 100.0% 100.0% 85.1% -94 dBm | 100.0% 100.0% 100.0% 100.0% -75 dBm |
| Arlington Heights, IL | 100.0% 100.0% 100.0% 98.8% -90 dBm | 100.0% 100.0% 100.0% 77.1% -99 dBm | 100.0% 100.0% 92.0% 85.3% -82 dBm |
| Barrington, IL | 100.0% 100.0% 100.0% 91.3% -85 dBm | 100.0% 100.0% 100.0% 83.5% -99 dBm | 100.0% 100.0% 100.0% 95.7% -82 dBm |
| Barrington Hills, IL | 100.0% 100.0% 91.7% 56.9% -98 dBm | 100.0% 100.0% 91.4% 60.8% -108 dBm | 96.8% 96.8% 88.1% 56.5% -93 dBm |
| Bedford Park, IL | 100.0% 100.0% 100.0% 99.3% -80 dBm | 100.0% 100.0% 100.0% 86.1% -97 dBm | 100.0% 100.0% 100.0% 99.3% -72 dBm |
| Bellwood, IL | 100.0% 100.0% 100.0% 100.0% -79 dBm | 100.0% 100.0% 100.0% 72.9% -95 dBm | 100.0% 100.0% 100.0% 100.0% -71 dBm |
| Berkeley, IL | 100.0% 100.0% 100.0% 100.0% -75 dBm | 100.0% 100.0% 100.0% 71.4% -92 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Berwyn, IL | 100.0% 100.0% 100.0% 100.0% -82 dBm | 100.0% 100.0% 100.0% 90.7% -91 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Blue Island, IL | 100.0% 100.0% 100.0% 98.9% -83 dBm | 100.0% 100.0% 100.0% 75.8% -94 dBm | 100.0% 100.0% 100.0% 100.0% -71 dBm |
| Bridgeview, IL | 100.0% 100.0% 100.0% 100.0% -77 dBm | 100.0% 100.0% 100.0% 90.8% -93 dBm | 100.0% 100.0% 100.0% 100.0% -70 dBm |
| Broadview, IL | 100.0% 100.0% 100.0% 100.0% -79 dBm | 100.0% 100.0% 100.0% 79.5% -90 dBm | 100.0% 100.0% 100.0% 100.0% -73 dBm |
| Brookfield, IL | 100.0% 100.0% 100.0% 97.3% -85 dBm | 100.0% 100.0% 100.0% 80.0% -94 dBm | 100.0% 100.0% 100.0% 98.7% -83 dBm |
| Burbank, IL | 100.0% 100.0% 100.0% 100.0% -78 dBm | 100.0% 100.0% 100.0% 94.3% -90 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Burnham, IL | 100.0% 100.0% 100.0% 100.0% -84 dBm | 100.0% 100.0% 100.0% 70.2% -95 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Calumet City, IL | 100.0% 100.0% 100.0% 94.9% -88 dBm | 100.0% 100.0% 100.0% 80.6% -95 dBm | 100.0% 100.0% 100.0% 100.0% -74 dBm |
| Calumet Park, IL | 100.0% 100.0% 100.0% 85.7% -91 dBm | 100.0% 100.0% 100.0% 82.1% -88 dBm | 100.0% 100.0% 100.0% 100.0% -70 dBm |
| Chicago, IL | 100.0% 100.0% 99.4% 95.0% -87 dBm | 99.9% 99.9% 99.8% 82.2% -93 dBm | 99.9% 99.9% 99.1% 99.0% -72 dBm |
| Chicago Heights, IL | 100.0% 100.0% 100.0% 95.3% -87 dBm | 100.0% 100.0% 99.6% 79.4% -97 dBm | 100.0% 100.0% 100.0% 100.0% -77 dBm |
| Chicago Ridge, IL | 100.0% 100.0% 100.0% 100.0% -83 dBm | 100.0% 100.0% 100.0% 75.9% -94 dBm | 100.0% 100.0% 100.0% 100.0% -70 dBm |
| Cicero, IL | 100.0% 100.0% 100.0% 97.9% -88 dBm | 100.0% 100.0% 100.0% 70.4% -92 dBm | 100.0% 100.0% 100.0% 100.0% -70 dBm |
| Country Club Hills, IL | 100.0% 100.0% 100.0% 100.0% -81 dBm | 100.0% 100.0% 100.0% 72.6% -95 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Countryside, IL | 100.0% 100.0% 100.0% 95.7% -82 dBm | 100.0% 100.0% 98.6% 75.7% -100 dBm | 100.0% 100.0% 100.0% 100.0% -77 dBm |
| Crestwood, IL | 100.0% 100.0% 100.0% 100.0% -84 dBm | 100.0% 100.0% 100.0% 77.6% -95 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Des Plaines, IL | 100.0% 100.0% 99.4% 94.3% -88 dBm | 100.0% 100.0% 100.0% 73.6% -96 dBm | 100.0% 100.0% 100.0% 100.0% -78 dBm |
| Dixmoor, IL | 100.0% 100.0% 100.0% 90.0% -93 dBm | 100.0% 100.0% 100.0% 66.7% -94 dBm | 100.0% 100.0% 100.0% 100.0% -69 dBm |
| Dolton, IL | 100.0% 100.0% 99.1% 92.1% -90 dBm | 100.0% 100.0% 100.0% 78.1% -94 dBm | 100.0% 100.0% 100.0% 100.0% -74 dBm |
| East Hazel Crest, IL | 100.0% 100.0% 100.0% 100.0% -80 dBm | 100.0% 100.0% 100.0% 36.8% -104 dBm | 100.0% 100.0% 100.0% 100.0% -68 dBm |
| Elk Grove Village, IL | 100.0% 100.0% 100.0% 99.6% -81 dBm | 100.0% 100.0% 100.0% 72.7% -98 dBm | 100.0% 100.0% 100.0% 100.0% -76 dBm |
| Elmwood Park, IL | 100.0% 100.0% 100.0% 100.0% -87 dBm | 100.0% 100.0% 100.0% 82.6% -95 dBm | 100.0% 100.0% 100.0% 100.0% -74 dBm |
| Evanston, IL | 100.0% 100.0% 98.4% 89.8% -89 dBm | 100.0% 100.0% 100.0% 82.3% -94 dBm | 100.0% 100.0% 100.0% 96.8% -80 dBm |
| Evergreen Park, IL | 100.0% 100.0% 100.0% 100.0% -82 dBm | 100.0% 100.0% 100.0% 86.8% -89 dBm | 100.0% 100.0% 100.0% 100.0% -74 dBm |
| Flossmoor, IL | 100.0% 100.0% 100.0% 88.6% -90 dBm | 100.0% 100.0% 100.0% 68.2% -100 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| Ford Heights, IL | 100.0% 100.0% 79.2% 66.7% -89 dBm | 100.0% 100.0% 100.0% 70.8% -98 dBm | 100.0% 100.0% 100.0% 100.0% -73 dBm |
| Forest Park, IL | 100.0% 100.0% 100.0% 100.0% -83 dBm | 100.0% 100.0% 100.0% 76.7% -94 dBm | 100.0% 100.0% 100.0% 100.0% -69 dBm |
| Forest View, IL | 100.0% 100.0% 100.0% 100.0% -77 dBm | 100.0% 100.0% 100.0% 72.4% -91 dBm | 100.0% 100.0% 100.0% 100.0% -69 dBm |
| Franklin Park, IL | 100.0% 100.0% 100.0% 99.1% -83 dBm | 100.0% 100.0% 100.0% 82.3% -94 dBm | 100.0% 100.0% 100.0% 100.0% -68 dBm |
| Glencoe, IL | 100.0% 100.0% 100.0% 71.9% -95 dBm | 100.0% 97.8% 100.0% 74.2% -100 dBm | 100.0% 100.0% 100.0% 87.6% -86 dBm |
| Glenview, IL | 100.0% 100.0% 99.1% 89.1% -91 dBm | 100.0% 100.0% 100.0% 84.0% -97 dBm | 100.0% 100.0% 100.0% 99.7% -77 dBm |
| Glenwood, IL | 100.0% 100.0% 100.0% 89.9% -92 dBm | 100.0% 100.0% 100.0% 79.7% -98 dBm | 100.0% 100.0% 100.0% 100.0% -76 dBm |
| Golf, IL | 100.0% 100.0% 100.0% 55.6% -101 dBm | 100.0% 100.0% 100.0% 100.0% -104 dBm | 100.0% 100.0% 100.0% 100.0% -81 dBm |
| Harvey, IL | 100.0% 100.0% 100.0% 99.3% -84 dBm | 100.0% 100.0% 100.0% 84.3% -95 dBm | 100.0% 100.0% 100.0% 100.0% -73 dBm |
| Harwood Heights, IL | 100.0% 100.0% 100.0% 95.7% -90 dBm | 100.0% 100.0% 100.0% 95.7% -93 dBm | 100.0% 100.0% 100.0% 100.0% -69 dBm |
| Hazel Crest, IL | 100.0% 100.0% 100.0% 95.4% -84 dBm | 100.0% 100.0% 100.0% 85.1% -94 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Hickory Hills, IL | 100.0% 100.0% 100.0% 100.0% -82 dBm | 100.0% 100.0% 100.0% 91.2% -95 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Hillside, IL | 100.0% 100.0% 100.0% 100.0% -74 dBm | 100.0% 100.0% 100.0% 73.8% -95 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Hodgkins, IL | 100.0% 100.0% 100.0% 96.9% -81 dBm | 100.0% 100.0% 100.0% 86.2% -94 dBm | 100.0% 100.0% 100.0% 100.0% -78 dBm |
| Hoffman Estates, IL | 100.0% 100.0% 97.8% 86.0% -90 dBm | 99.8% 99.8% 98.6% 66.2% -103 dBm | 100.0% 100.0% 98.2% 90.4% -83 dBm |
| Hometown, IL | 100.0% 100.0% 100.0% 100.0% -86 dBm | 100.0% 100.0% 100.0% 54.5% -91 dBm | 100.0% 100.0% 100.0% 100.0% -72 dBm |
| Homewood, IL | 100.0% 100.0% 100.0% 95.9% -89 dBm | 100.0% 100.0% 100.0% 74.6% -99 dBm | 100.0% 100.0% 100.0% 100.0% -76 dBm |
| Indian Head Park, IL | 100.0% 100.0% 100.0% 95.8% -85 dBm | 100.0% 100.0% 100.0% 75.0% -99 dBm | 100.0% 100.0% 100.0% 100.0% -76 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 Cook County, IL 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.