CoverageMap

Castle Rock

Cell coverage comparison in Castle Rock, Washington

US

Based on crowdsourced speed tests and signal measurements in Castle Rock, Washington, the current snapshot reflects over 300 speed tests and shows medians of 77.9 Mbps download, 3.9 Mbps upload, and 45 ms latency.

Performance by Carrier in Castle Rock

Explore median download speeds, upload performance, and network latency for each major mobile carrier in Castle Rock, 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
Download6.9 Mbps
Upload1.9 Mbps
Latency87 ms
Coverage83.0%

31 tests conducted

T-Mobile logo
Download92.5 Mbps
Upload5.6 Mbps
Latency57 ms
Coverage63.0%

Over 100 tests conducted

Verizon logo
Download96.4 Mbps
Upload3.7 Mbps
Latency39 ms
Coverage69.2%

Over 100 tests conducted

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

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

Network Performance in Castle Rock

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

Median Performance

Download

77.9Mbps

Upload

3.9Mbps

Latency

45ms

Top Performers

Fastest Download: Verizon

96.4 Mbps

Fastest Upload: T-Mobile

5.6 Mbps

Best Latency: Verizon

39 ms

Best Coverage: AT&T

83.0%

Coverage Snapshot

5G54.0%
4G LTE83.0%
Based on over 300 speed tests

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

These medians are calculated from over 300 tests. Current medians are 77.9 Mbps download, 3.9 Mbps upload, and 45 ms latency.

Cell Phone Plans for Castle Rock

Compare wireless plans from carriers with coverage in this area.

Helium Mobile Zero

$0/mo

Monthly plan

T-Mobile
  • 1 GB Data1GB cellular + 2GB Helium Wi-Fi
  • No Hotspot Included
  • 100 Minutes
  • 300 Texts

MobileX Custom

$0/mo

Monthly plan

Verizon
  • No Data Included
  • Hotspot Included
  • Unlimited Minutes
  • Unlimited Texts

MobileX 150 Mins 150 Texts

$4.48/mo

Monthly plan

Verizon
  • No Data Included
  • No Hotspot Included
  • Unlimited Minutes
  • Unlimited Texts

Helium Mobile Sprout

$5/mo

Monthly plan

T-Mobile
  • 3 GB Datahigh-speed, then data stops
  • No Hotspot Included
  • Unlimited Minutes
  • Unlimited Texts

Red Pocket 500MB 12 Months

$5/mo

12 month term

AT&T
T-Mobile
Verizon
  • 0.5 GB Datahigh-speed, then Unknown
  • Hotspot Included
  • 500 Minutes
  • 500 Texts

Tello 100 Mins

$5/mo

Monthly plan

T-Mobile
  • No Data Included
  • No Hotspot Included
  • 100 Minutes
  • Unlimited Texts

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Cell Coverage in Castle Rock: FAQ

What is the best cell phone carrier in Castle Rock?

Based on crowdsourced speed tests in Castle Rock, Verizon 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 Castle Rock?

We need at least 25 recent speed tests to generate reliable local metrics. If we don't have enough tests yet, the page focuses on maps and nearby locations while we keep collecting data.

How can I check coverage at my specific address in Castle Rock?

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 Castle Rock?

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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Explore detailed coverage data for Castle Rock on our interactive map.

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Castle Rock, Washington Cell Coverage | CoverageMap