Skip to main content
DSDownloadSpeed
FCC Data · Updated April 2026
B

Cassia County Internet

Cassia County, Idaho has a Broadband Grade of B 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.

63
Score
1000 Mbps
Avg Download
100%
Fiber Access
10
Avg Providers
Grade Distribution

ZIP Code Grades in Cassia County

A
0
B
7
C
0
D
0
F
0
Best

Fastest ZIP Codes in Cassia County

ZIPGradeDownloadProvidersFiber
83311B1000 Mbps10Yes
83312B1000 Mbps10Yes
83318B1000 Mbps10Yes
83323B1000 Mbps10Yes
83342B1000 Mbps10Yes
83344B1000 Mbps10Yes
83346B1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Cassia County

ZIPGradeDownloadProvidersFiber
83311B1000 Mbps10Yes
83312B1000 Mbps10Yes
83318B1000 Mbps10Yes
83323B1000 Mbps10Yes
83342B1000 Mbps10Yes
83344B1000 Mbps10Yes
83346B1000 Mbps10Yes
FAQ

Frequently Asked Questions

What is the average internet speed in Cassia County, Idaho?

Cassia County, Idaho has an average maximum download speed of 1000 Mbps across 7 ZIP codes. The county received a Broadband Grade of B (63/100), 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 Cassia County?

Cassia 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 Cassia County?

100% of ZIP codes in Cassia County, Idaho 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 Cassia County?

The best-connected ZIP code in Cassia County is 83311 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 Cassia County's 1000 Mbps average.