Johnson, IL Internet Speeds — Measured 2024
Real speed tests run in Johnson County, Illinois during 2024 recorded a median download of 96.6 Mbps, upload of 75.1 Mbps and latency of 19.4 ms, across 601 measurements. That is 1.1× the US median and places it #582 of 2,425 US counties.
What these numbers mean here
The median is the typical connection, not the best one available. Half the tests in Johnson came in below 96.6 Mbps and half above. The slower quarter of connections measured under 25.8 Mbps, while the faster quarter exceeded 126.1 Mbps — a spread that usually reflects a mix of fibre, cable and older DSL lines in the same area rather than one uniform service level.
At 96.6 Mbps down and 75.1 Mbps up, a typical household here can handle HD streaming and video calls, though simultaneous heavy use may compete for bandwidth. Latency of 19.4 ms is excellent for gaming and real-time calls.
The spread of connections in Johnson
Measured download speed, 2024
How Illinois has changed since 2020
Median download by year, Illinois
State-wide measured median, Mbps
How the big providers actually perform
Median measured download speed by provider across the United States. SignalScout does not yet map which of these serve Johnson specifically — see how to check availability — but the ranking shows what customers of each really get.
Illinois counties ranked
| # | County | Down | Up | Latency |
|---|---|---|---|---|
| 1 | Richland | 115.6 | 28.6 | 16.2 |
| 2 | Kendall | 107.0 | 23.9 | 9.5 |
| 3 | DuPage | 105.9 | 21.5 | 8.1 |
| 4 | Lake | 104.5 | 19.8 | 8.4 |
| 5 | Kane | 103.0 | 22.7 | 9.5 |
| 6 | Jefferson | 102.7 | 11.3 | 16.0 |
| 7 | Will | 101.7 | 20.6 | 9.0 |
| 8 | Hamilton | 101.3 | 45.4 | 16.0 |
| 9 | Clay | 100.6 | 74.4 | 18.6 |
| 10 | Rock Island | 99.3 | 29.8 | 13.6 |
| 11 | Madison | 98.9 | 11.2 | 14.3 |
| 12 | St. Clair | 97.7 | 11.1 | 14.5 |
See all 84 counties in Illinois →
Check a specific address in Johnson
County figures describe the area. To look up a specific street address and compare it with somewhere else you are considering, use SignalScout directly.
Common questions
What is the average internet speed in Johnson, IL?
Speed tests run in Johnson during 2024 recorded a median download of 96.6 Mbps, a median upload of 75.1 Mbps and median latency of 19.4 ms, across 601 measurements collected by Measurement Lab.
Is internet in Johnson faster or slower than the US average?
Faster. The median measured download here is 96.6 Mbps against a US median of 85.2 Mbps, which ranks Johnson #582 out of 2,425 counties nationally.
Are these advertised speeds or real ones?
Real ones. These are aggregated results of speed tests run by actual people on their own connections, published in the public domain by Measurement Lab. They reflect the plans residents actually buy, which is typically well below the fastest plan a provider sells.
Which internet providers serve Johnson?
SignalScout does not yet map provider availability by address — that data comes from FCC filings that require a registered account for bulk access. The page shows how major national providers perform, and the FCC National Broadband Map lists filed availability by address.
Check a real address
See the measured download, upload and latency for any US address, plus a Connectivity Score ranked against every county in the country.