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DSDownloadSpeed
FCC Data · Updated April 2026
B

Rock County Internet

Rock County, Wisconsin has a Broadband Grade of B with an average download speed of 1000 Mbps across 13 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.

62
Score
1000 Mbps
Avg Download
100%
Fiber Access
10
Avg Providers
Grade Distribution

ZIP Code Grades in Rock County

A
0
B
13
C
0
D
0
F
0
Best

Fastest ZIP Codes in Rock County

ZIPGradeDownloadProvidersFiber
53501B1000 Mbps10Yes
53505B1000 Mbps10Yes
53511B1000 Mbps10Yes
53520B1000 Mbps10Yes
53525B1000 Mbps10Yes
53534B1000 Mbps10Yes
53536B1000 Mbps10Yes
53537B1000 Mbps10Yes
53545B1000 Mbps10Yes
53546B1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Rock County

ZIPGradeDownloadProvidersFiber
53501B1000 Mbps10Yes
53505B1000 Mbps10Yes
53511B1000 Mbps10Yes
53520B1000 Mbps10Yes
53525B1000 Mbps10Yes
53534B1000 Mbps10Yes
53536B1000 Mbps10Yes
53537B1000 Mbps10Yes
53545B1000 Mbps10Yes
53546B1000 Mbps10Yes
FAQ

Frequently Asked Questions

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

Rock County, Wisconsin has an average maximum download speed of 1000 Mbps across 13 ZIP codes. The county received a Broadband Grade of B (62/100), 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 Rock County?

Rock 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 Rock County?

100% of ZIP codes in Rock 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 Rock County?

The best-connected ZIP code in Rock County is 53501 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 Rock County's 1000 Mbps average.