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DSDownloadSpeed
FCC Data · Updated April 2026
A

Yankton County Internet

Yankton County, South Dakota has a Broadband Grade of A with an average download speed of 1000 Mbps across 7 ZIP codes. 100% of the county has fiber internet access, and the area averages 10 providers per ZIP code. Internet access is above average for the U.S.

84
Score
1000 Mbps
Avg Download
100%
Fiber Access
10
Avg Providers
Grade Distribution

ZIP Code Grades in Yankton County

A
7
B
0
C
0
D
0
F
0
Best

Fastest ZIP Codes in Yankton County

ZIPGradeDownloadProvidersFiber
57031A1000 Mbps10Yes
57037A1000 Mbps10Yes
57040A1000 Mbps10Yes
57046A1000 Mbps10Yes
57067A1000 Mbps10Yes
57072A1000 Mbps10Yes
57078A1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Yankton County

ZIPGradeDownloadProvidersFiber
57031A1000 Mbps10Yes
57037A1000 Mbps10Yes
57040A1000 Mbps10Yes
57046A1000 Mbps10Yes
57067A1000 Mbps10Yes
57072A1000 Mbps10Yes
57078A1000 Mbps10Yes
FAQ

Frequently Asked Questions

What is the average internet speed in Yankton County, South Dakota?

Yankton County, South Dakota has an average maximum download speed of 1000 Mbps across 7 ZIP codes. The county received a Broadband Grade of A (84/100), which factors in download speed, provider competition, fiber availability, and upload speed. This meets the FCC broadband standard of 100 Mbps download.

How many internet providers are in Yankton County?

Yankton County has an average of 10 internet providers per ZIP code. 100% of ZIP codes in the county have fiber internet access. Having 3 or more providers typically leads to better prices and service quality through competition.

Is there fiber internet in Yankton County?

100% of ZIP codes in Yankton County, South Dakota have fiber internet available. Fiber provides the fastest and most reliable connections, typically 500 Mbps to 5 Gbps with symmetrical upload speeds. Fiber coverage in this county is above the national average.

What is the best ZIP code for internet in Yankton County?

The best-connected ZIP code in Yankton County is 57031 with a Broadband Grade of A, 1000 Mbps maximum download, and 10 providers. Fiber internet is available in this ZIP code.

Test Your Speed

See how your connection compares to Yankton County's 1000 Mbps average.