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DSDownloadSpeed
FCC Data · Updated April 2026
A

Clayton County Internet

Clayton County, Iowa has a Broadband Grade of A with an average download speed of 1000 Mbps across 15 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.

83
Score
1000 Mbps
Avg Download
100%
Fiber Access
10
Avg Providers
Grade Distribution

ZIP Code Grades in Clayton County

A
15
B
0
C
0
D
0
F
0
Best

Fastest ZIP Codes in Clayton County

ZIPGradeDownloadProvidersFiber
52035A1000 Mbps10Yes
52042A1000 Mbps10Yes
52043A1000 Mbps10Yes
52044A1000 Mbps10Yes
52047A1000 Mbps10Yes
52048A1000 Mbps10Yes
52049A1000 Mbps10Yes
52052A1000 Mbps10Yes
52066A1000 Mbps10Yes
52072A1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Clayton County

ZIPGradeDownloadProvidersFiber
52035A1000 Mbps10Yes
52042A1000 Mbps10Yes
52043A1000 Mbps10Yes
52044A1000 Mbps10Yes
52047A1000 Mbps10Yes
52048A1000 Mbps10Yes
52049A1000 Mbps10Yes
52052A1000 Mbps10Yes
52066A1000 Mbps10Yes
52072A1000 Mbps10Yes
FAQ

Frequently Asked Questions

What is the average internet speed in Clayton County, Iowa?

Clayton County, Iowa has an average maximum download speed of 1000 Mbps across 15 ZIP codes. The county received a Broadband Grade of A (83/100), 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 Clayton County?

Clayton 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 Clayton County?

100% of ZIP codes in Clayton County, Iowa 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 Clayton County?

The best-connected ZIP code in Clayton County is 52035 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 Clayton County's 1000 Mbps average.