JOLIET · IL · FCC DATA

Best cell phone coverage in Joliet Joliet, Illinois

AT&T, T-Mobile and Verizon all report outdoor coverage of between 99.9% and 100% of Joliet, IL, so no carrier wins on outdoor coverage here.

Carrier-reported coverage from FCC carrier filings as of December 31, 2025, not measured signal. How these figures are read

RESULT · JOLIET, IL

Coverage in Joliet, IL

Population 151,837 (Census 2024 estimate)

What stands out in Joliet

  • T-Mobile reports 96.7% of Joliet in a moving car, against 44.9% of Illinois as a whole.
  • Beyond the city limits it thins: across Will County, T-Mobile reports 83% in a moving car, against 96.7% in Joliet.
  • 5G at 35/3 Mbps covers 99.9% of Joliet, against 76.1% of Illinois.
✓ ALL THREE WITHIN 0.1 POINTS
All three carriers
99.9–100%

AT&T vs T-Mobile vs Verizon in Joliet

=
Verizon
Outdoor
100%
In car
98.9%
=
T-Mobile
Outdoor
100%
In car
96.7%
=
AT&T
Outdoor
99.9%
In car
97.9%

4G and 5G across all carriers in Joliet

4G LTE
100%
5G 7/1
100%
5G 35/3
99.9%

Check your street on each carrier's map

Verizon coverage map → T-Mobile coverage map → AT&T coverage map →

Questions about coverage in Joliet

Q1

How does Joliet compare with the rest of Illinois?

Outdoors Verizon 100% (state 96%), T-Mobile 100% (state 83.6%), AT&T 99.9% (state 93%); in a moving car Verizon 98.9% (state 58.8%), AT&T 97.9% (state 72.1%), T-Mobile 96.7% (state 44.9%).

ZIP codes mostly inside Joliet

60431, 60432, 60435, 60436.

See the statewide Illinois comparison, or coverage in Chicago, Aurora, Naperville, Rockford, Elgin, Springfield, Peoria.

Cities with figures closest to Joliet's: Dayton, OH, Sugar Land, TX, Edinburg, TX, Richardson, TX, Pasadena, TX.