Sangamon, IL Internet Speeds — Measured 2024
Real speed tests run in Sangamon County, Illinois during 2024 recorded a median download of 93.8 Mbps, upload of 22.1 Mbps and latency of 12.6 ms, across 9,610 measurements. That is 1.1× the US median and places it #688 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 Sangamon came in below 93.8 Mbps and half above. The slower quarter of connections measured under 33.3 Mbps, while the faster quarter exceeded 234.9 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 93.8 Mbps down and 22.1 Mbps up, a typical household here can handle HD streaming and video calls, though simultaneous heavy use may compete for bandwidth. Latency of 12.6 ms is excellent for gaming and real-time calls.
The spread of connections in Sangamon
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 Sangamon 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 Sangamon
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 Sangamon, IL?
Speed tests run in Sangamon during 2024 recorded a median download of 93.8 Mbps, a median upload of 22.1 Mbps and median latency of 12.6 ms, across 9,610 measurements collected by Measurement Lab.
Is internet in Sangamon faster or slower than the US average?
Faster. The median measured download here is 93.8 Mbps against a US median of 85.2 Mbps, which ranks Sangamon #688 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 Sangamon?
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.