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DSDownloadSpeed
FCC Data · Updated April 2026
B

Jefferson County Internet

Jefferson County, Wisconsin has a Broadband Grade of B with an average download speed of 1000 Mbps across 10 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.

60
Score
1000 Mbps
Avg Download
100%
Fiber Access
10
Avg Providers
Grade Distribution

ZIP Code Grades in Jefferson County

A
0
B
10
C
0
D
0
F
0
Best

Fastest ZIP Codes in Jefferson County

ZIPGradeDownloadProvidersFiber
53036B1000 Mbps10Yes
53038B1000 Mbps10Yes
53094B1000 Mbps10Yes
53137B1000 Mbps10Yes
53156B1000 Mbps10Yes
53178B1000 Mbps10Yes
53538B1000 Mbps10Yes
53549B1000 Mbps10Yes
53551B1000 Mbps10Yes
53594B1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Jefferson County

ZIPGradeDownloadProvidersFiber
53036B1000 Mbps10Yes
53038B1000 Mbps10Yes
53094B1000 Mbps10Yes
53137B1000 Mbps10Yes
53156B1000 Mbps10Yes
53178B1000 Mbps10Yes
53538B1000 Mbps10Yes
53549B1000 Mbps10Yes
53551B1000 Mbps10Yes
53594B1000 Mbps10Yes
FAQ

Frequently Asked Questions

What is the average internet speed in Jefferson County, Wisconsin?

Jefferson County, Wisconsin has an average maximum download speed of 1000 Mbps across 10 ZIP codes. The county received a Broadband Grade of B (60/100), 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 Jefferson County?

Jefferson 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 Jefferson County?

100% of ZIP codes in Jefferson County, Wisconsin 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 Jefferson County?

The best-connected ZIP code in Jefferson County is 53036 with a Broadband Grade of B, 1000 Mbps maximum download, and 10 providers. Fiber internet is available in this ZIP code.

Test Your Speed

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