Dewey, SD Internet Speeds — Measured 2024
Real speed tests run in Dewey County, South Dakota during 2024 recorded a median download of 36.8 Mbps, upload of 16.8 Mbps and latency of 29.8 ms, across 636 measurements. That is 0.4× the US median and places it #2,192 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 Dewey came in below 36.8 Mbps and half above. The slower quarter of connections measured under 22.6 Mbps, while the faster quarter exceeded 58.4 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 36.8 Mbps down and 16.8 Mbps up, a typical household here can manage standard streaming and browsing, but will feel the limits with multiple users or large uploads. Latency of 29.8 ms is acceptable for most real-time use.
The spread of connections in Dewey
Measured download speed, 2024
How South Dakota has changed since 2020
Median download by year, South Dakota
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 Dewey specifically — see how to check availability — but the ranking shows what customers of each really get.
South Dakota counties ranked
| # | County | Down | Up | Latency |
|---|---|---|---|---|
| 1 | Codington | 151.9 | 24.8 | 33.0 |
| 2 | Clay | 134.6 | 59.5 | 33.7 |
| 3 | Meade | 108.7 | 21.7 | 30.0 |
| 4 | Lawrence | 108.2 | 23.8 | 29.0 |
| 5 | Lincoln | 101.1 | 31.1 | 32.0 |
| 6 | Hughes | 100.8 | 32.0 | 32.5 |
| 7 | Beadle | 99.9 | 25.4 | 34.4 |
| 8 | Minnehaha | 98.4 | 28.6 | 31.5 |
| 9 | Davison | 95.5 | 36.6 | 31.9 |
| 10 | Yankton | 93.3 | 19.6 | 31.6 |
| 11 | Pennington | 91.2 | 20.5 | 30.4 |
| 12 | Brule | 89.5 | 54.6 | 36.3 |
See all 20 counties in South Dakota →
Check a specific address in Dewey
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 Dewey, SD?
Speed tests run in Dewey during 2024 recorded a median download of 36.8 Mbps, a median upload of 16.8 Mbps and median latency of 29.8 ms, across 636 measurements collected by Measurement Lab.
Is internet in Dewey faster or slower than the US average?
Slower. The median measured download here is 36.8 Mbps against a US median of 85.2 Mbps, which ranks Dewey #2,192 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 Dewey?
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.