CoverageMap

Fillmore

Cell coverage comparison in Fillmore, Illinois

US

Based on crowdsourced speed tests and signal measurements in Fillmore, Illinois using data from Montgomery, the current snapshot reflects over 700 speed tests and shows medians of 99.3 Mbps download, 16.3 Mbps upload, and 51 ms latency.

Not enough data for Fillmore

Showing performance data for Montgomery instead. We need at least 25 speed tests in Fillmore to generate local metrics.

Performance by Carrier in Montgomery

Explore median download speeds, upload performance, and network latency for each major mobile carrier in Montgomery, calculated from millions of real-world, crowdsourced speed tests. These results reflect typical everyday performance to help you compare carriers and choose the network that delivers the fastest speeds, most responsive connections, and broadest coverage where you live, work, and travel.

AT&T logo
Down
88.1Mbps
Up
20.3Mbps
Reliab.
10.0/ 10
Cov.
100.0%

Over 300 tests conducted

View CarrierSee Plans
T-Mobile logo
Down
428.1Mbps
Up
19.4Mbps
Reliab.
9.5/ 10
Cov.
95.0%

Over 200 tests conducted

View CarrierSee Plans
Verizon logo
Down
45.0Mbps
Up
3.3Mbps
Reliab.
4.7/ 10
Cov.
85.8%

Over 100 tests conducted

View CarrierSee Plans

Performance by Carrier shows side-by-side results for the primary mobile providers measured in Montgomery. Each row reflects download, upload, latency, and reliability for that carrier.

Providers included in this comparison are AT&T, T-Mobile, Verizon. Per-carrier test counts are shown in the table to indicate data accuracy.

Promoted Offers

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Network Performance

Get a complete view of mobile performance across Montgomery with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the Montgomery-wide snapshot to understand overall trends, then dive deeper to compare individual carriers side-by-side and see how each performs in speed, responsiveness, and availability.

Median Performance

Download

99.3Mbps

Upload

16.3Mbps

Latency

51ms

Reliability

9.0/ 10

Top Performers

Best Download: T-Mobile

428.1 Mbps

Best Upload: AT&T

20.3 Mbps

Best Latency: T-Mobile

47 ms

Best Reliability: AT&T

10.0 / 10

Best Coverage: AT&T

100.0%

Coverage Snapshot

5G84.4%
4G LTE100.0%
Based on over 700 speed tests

Network Performance aggregates all measured carriers in Montgomery to provide a baseline view of typical speeds and latency in the area. Use these medians as a quick indicator of overall network quality.

Local testing in Fillmore is limited, so these medians are based on data from Montgomery. Current medians are 99.3 Mbps download, 16.3 Mbps upload, and 51 ms latency.

Promoted Offers

Mint Mobile

$500 off Galaxy S26 series, plus 1 year of unlimited for $15/mo

New customers only

See Deal
Visible

Join Visible and get unlimited data for only $20/mo

Use code FRESHSTART to save $5 off any Visible plan

See Deal

Cell Phone Plans for Fillmore

Compare wireless plans from carriers with coverage in this area.

Recommended PlanSponsored

Mint Mobile 5GB Annual

12 month term

T-Mobile
$15/mo
5 GB Data
Hotspot Included
Unlimited min
Unlimited texts
View Plan
Recommended PlanSponsored

US Mobile 5GB

Monthly plan

AT&T
T-Mobile
Verizon
$15/mo
5 GB Data
Hotspot Included
Unlimited min
Unlimited texts
Taxes & fees included
View Plan
Recommended PlanSponsored

US Mobile Unlimited Starter Dark Star

Monthly plan

AT&T
$25/mo
Unlimited Data
20 GB Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
View Plan
Recommended PlanSponsored

Visible Base

Monthly plan

Verizon
$25/mo
Unlimited Data
Unlimited Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
View Plan
Recommended PlanSponsored

Mint Mobile Unlimited Annual

12 month term

T-Mobile
$30/mo
Unlimited Data
20 GB Hotspot
Unlimited min
Unlimited texts
Limited-time offer

$15/mo first year

View Plan
Recommended PlanSponsored

Visible+

Monthly plan

Verizon
$35/mo
Unlimited Data
Unlimited Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
Limited-time offer

$30/mo for 5 years with code 5OFF5

View Plan

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Cell Coverage in Fillmore: FAQ

What is the best cell phone carrier in Fillmore?

Based on crowdsourced speed tests in Montgomery, T-Mobile currently leads in median download speeds. Compare carriers in the performance table above for the latest results.

Why might this page show limited data for Fillmore?

We need at least 25 recent speed tests to generate reliable local metrics. Until we reach that threshold in Fillmore, we show performance data for Montgomery when it is available.

What is the reliability score?

The reliability score summarizes how dependable mobile performance is in Montgomery. It uses a 0.0 to 10.0 scale (higher is better) and is calculated from real-world speed test percentiles with weighted components: download (50%), latency (30%), and upload (20%). It evaluates the lower-end experience using the bottom 10%, 5%, and 1% percentiles when enough samples are available. If local speed testing is limited, a coverage-based fallback is used from signal quality distribution (great/good/poor).

How can I check coverage at my specific address in Fillmore?

Use the interactive map to check signal strength at your exact address. Visit the CoverageMap interactive map to explore 4G/5G availability.

How can I contribute coverage data for Fillmore?

Download the CoverageMap app and run a few speed tests with location enabled. Your results help improve coverage accuracy and unlock local rankings faster.

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View Interactive Map

Explore detailed coverage data for Fillmore on our interactive map.

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Test coverage at your location and contribute to our crowdsourced data.

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