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DSDownloadSpeed
FCC Data · Updated April 2026
A

Jefferson County Internet

Jefferson County, Kentucky has a Broadband Grade of A with an average download speed of 1000 Mbps across 38 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.

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

ZIP Code Grades in Jefferson County

A
38
B
0
C
0
D
0
F
0
Best

Fastest ZIP Codes in Jefferson County

ZIPGradeDownloadProvidersFiber
40023A1000 Mbps10Yes
40025A1000 Mbps10Yes
40041A1000 Mbps10Yes
40118A1000 Mbps10Yes
40202A1000 Mbps10Yes
40203A1000 Mbps10Yes
40204A1000 Mbps10Yes
40205A1000 Mbps10Yes
40206A1000 Mbps10Yes
40207A1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Jefferson County

ZIPGradeDownloadProvidersFiber
40023A1000 Mbps10Yes
40025A1000 Mbps10Yes
40041A1000 Mbps10Yes
40118A1000 Mbps10Yes
40202A1000 Mbps10Yes
40203A1000 Mbps10Yes
40204A1000 Mbps10Yes
40205A1000 Mbps10Yes
40206A1000 Mbps10Yes
40207A1000 Mbps10Yes
FAQ

Frequently Asked Questions

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

Jefferson County, Kentucky has an average maximum download speed of 1000 Mbps across 38 ZIP codes. The county received a Broadband Grade of A (100/100), 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, Kentucky 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 40023 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 Jefferson County's 1000 Mbps average.