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DSDownloadSpeed
FCC Data · Updated April 2026
B

Sullivan County Internet

Sullivan County, New York has a Broadband Grade of B with an average download speed of 1000 Mbps across 52 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 Sullivan County

A
0
B
52
C
0
D
0
F
0
Best

Fastest ZIP Codes in Sullivan County

ZIPGradeDownloadProvidersFiber
12483B1000 Mbps10Yes
12701B1000 Mbps10Yes
12719B1000 Mbps10Yes
12720B1000 Mbps10Yes
12721B1000 Mbps10Yes
12722B1000 Mbps10Yes
12723B1000 Mbps10Yes
12724B1000 Mbps10Yes
12726B1000 Mbps10Yes
12732B1000 Mbps10Yes
Needs Improvement

Slowest ZIP Codes in Sullivan County

ZIPGradeDownloadProvidersFiber
12483B1000 Mbps10Yes
12701B1000 Mbps10Yes
12719B1000 Mbps10Yes
12720B1000 Mbps10Yes
12721B1000 Mbps10Yes
12722B1000 Mbps10Yes
12723B1000 Mbps10Yes
12724B1000 Mbps10Yes
12726B1000 Mbps10Yes
12732B1000 Mbps10Yes
FAQ

Frequently Asked Questions

What is the average internet speed in Sullivan County, New York?

Sullivan County, New York has an average maximum download speed of 1000 Mbps across 52 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 Sullivan County?

Sullivan 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 Sullivan County?

100% of ZIP codes in Sullivan County, New York 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 Sullivan County?

The best-connected ZIP code in Sullivan County is 12483 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 Sullivan County's 1000 Mbps average.