SPRINGFIELD · IL · FCC DATA

Best cell phone coverage in Springfield Springfield, Illinois

AT&T, T-Mobile and Verizon all report outdoor coverage of between 99.8% and 100% of Springfield, 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 · SPRINGFIELD, IL

Coverage in Springfield, IL

Population 112,949 (Census 2024 estimate)

What stands out in Springfield

  • Springfield has the lowest T-Mobile figure in a moving car of the 8 mostly-land cities in Illinois on this site: 85.9%.
  • T-Mobile reports 85.9% of Springfield in a moving car, against 44.9% of Illinois as a whole.
  • Beyond the city limits it thins: across Sangamon County, T-Mobile reports 60.3% in a moving car, against 85.9% in Springfield.
  • Verizon loses the most of Springfield in a moving car: 99.8% outdoors, 82.2% in a car.
✓ ALL THREE WITHIN 0.2 POINTS
All three carriers
99.8–100%

AT&T vs T-Mobile vs Verizon in Springfield

=
AT&T
Outdoor
100%
In car
99.4%
=
T-Mobile
Outdoor
99.9%
In car
85.9%
=
Verizon
Outdoor
99.8%
In car
82.2%

4G and 5G across all carriers in Springfield

4G LTE
100%
5G 7/1
100%
5G 35/3
97.6%

Check your street on each carrier's map

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

Around Springfield, in Sangamon County

The towns nearby where one carrier reports the least outdoors: Pawnee (T-Mobile 35.5%), Cantrall (T-Mobile 60%), Mechanicsburg (AT&T 80.8%), Loami (Verizon 92.3%).

Questions about coverage in Springfield

Q1

How does Springfield compare with the rest of Illinois?

Outdoors AT&T 100% (state 93%), T-Mobile 99.9% (state 83.6%), Verizon 99.8% (state 96%); in a moving car AT&T 99.4% (state 72.1%), T-Mobile 85.9% (state 44.9%), Verizon 82.2% (state 58.8%).

ZIP codes mostly inside Springfield

62701, 62702, 62703, 62704, 62706.

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

Cities with figures closest to Springfield's: Springfield, MA, Clarksville, TN, Rio Rancho, NM, Memphis, TN, Durham, NC.