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DSDownloadSpeed
FCC Data · Updated April 2026
B

St. Mary's County Internet

St. Mary's County, Maryland has a Broadband Grade of B with an average download speed of 100 Mbps across 26 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
100 Mbps
Avg Download
100%
Fiber Access
10
Avg Providers
Grade Distribution

ZIP Code Grades in St. Mary's County

A
0
B
26
C
0
D
0
F
0
Best

Fastest ZIP Codes in St. Mary's County

ZIPGradeDownloadProvidersFiber
20606B100 Mbps10Yes
20609B100 Mbps10Yes
20618B100 Mbps10Yes
20619B100 Mbps10Yes
20620B100 Mbps10Yes
20621B100 Mbps10Yes
20624B100 Mbps10Yes
20626B100 Mbps10Yes
20628B100 Mbps10Yes
20630B100 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in St. Mary's County

ZIPGradeDownloadProvidersFiber
20606B100 Mbps10Yes
20609B100 Mbps10Yes
20618B100 Mbps10Yes
20619B100 Mbps10Yes
20620B100 Mbps10Yes
20621B100 Mbps10Yes
20624B100 Mbps10Yes
20626B100 Mbps10Yes
20628B100 Mbps10Yes
20630B100 Mbps10Yes
FAQ

Frequently Asked Questions

What is the average internet speed in St. Mary's County, Maryland?

St. Mary's County, Maryland has an average maximum download speed of 100 Mbps across 26 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 St. Mary's County?

St. Mary's 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 St. Mary's County?

100% of ZIP codes in St. Mary's County, Maryland 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 St. Mary's County?

The best-connected ZIP code in St. Mary's County is 20606 with a Broadband Grade of B, 100 Mbps maximum download, and 10 providers. Fiber internet is available in this ZIP code.

Test Your Speed

See how your connection compares to St. Mary's County's 100 Mbps average.