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DSDownloadSpeed
FCC Data · Updated April 2026
A

Dorchester County Internet

Dorchester County, South Carolina has a Broadband Grade of A with an average download speed of 1000 Mbps across 8 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.

89
Score
1000 Mbps
Avg Download
100%
Fiber Access
10
Avg Providers
Grade Distribution

ZIP Code Grades in Dorchester County

A
8
B
0
C
0
D
0
F
0
Best

Fastest ZIP Codes in Dorchester County

ZIPGradeDownloadProvidersFiber
29420A1000 Mbps10Yes
29437A1000 Mbps10Yes
29448A1000 Mbps10Yes
29471A1000 Mbps10Yes
29472A1000 Mbps10Yes
29477A1000 Mbps10Yes
29483A1000 Mbps10Yes
29485A1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Dorchester County

ZIPGradeDownloadProvidersFiber
29420A1000 Mbps10Yes
29437A1000 Mbps10Yes
29448A1000 Mbps10Yes
29471A1000 Mbps10Yes
29472A1000 Mbps10Yes
29477A1000 Mbps10Yes
29483A1000 Mbps10Yes
29485A1000 Mbps10Yes
FAQ

Frequently Asked Questions

What is the average internet speed in Dorchester County, South Carolina?

Dorchester County, South Carolina has an average maximum download speed of 1000 Mbps across 8 ZIP codes. The county received a Broadband Grade of A (89/100), 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 Dorchester County?

Dorchester 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 Dorchester County?

100% of ZIP codes in Dorchester County, South Carolina 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 Dorchester County?

The best-connected ZIP code in Dorchester County is 29420 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 Dorchester County's 1000 Mbps average.