Best Internet in Sullivan, NY
1000 Mbps avg · 52 ZIP codes · 100% fiber · 10 providers/ZIP
Internet Providers in Sullivan
| Provider | ZIP Codes Served | % of Area |
|---|---|---|
| Charter Communications INC | 52 | 100% |
| Verizon New York INC. | 52 | 100% |
| T-Mobile | 52 | 100% |
| Cablevision | 52 | 100% |
| Ctc of New York Upstate | 52 | 100% |
| Hudson Valley Wireless | 52 | 100% |
| King Street L.p. | 52 | 100% |
| Nysys Wireless | 52 | 100% |
ZIP Codes in Sullivan
Showing 50 of 52 ZIP codes.
See how your connection compares to the 1000 Mbps average in Sullivan.
Frequently Asked Questions
What is the average internet speed in Sullivan, NY?
Sullivan, New York has an average maximum download speed of 1000 Mbps across 52 ZIP codes. The fastest available speed is 1000 Mbps. 100% of ZIP codes have fiber internet.
Who are the best internet providers in Sullivan?
The most widely available providers in Sullivan are Charter Communications INC (52 ZIPs), Verizon New York INC. (52 ZIPs), T-Mobile (52 ZIPs). Check individual ZIP codes for exact availability at your address.
Is fiber internet available in Sullivan?
Yes, fiber internet is available in 100% of Sullivan's ZIP codes. Fiber coverage is good in this area. Search your specific ZIP code for exact fiber availability.
How does Sullivan compare to the rest of New York?
Sullivan has an average Broadband Grade of B (63/100). The Sullivan area averages 10 providers per ZIP code with 100% fiber access. Check the New York overview for statewide comparison.
For this entity, the underlying data on this page comes from the FCC Broadband Data Collection (BDC). The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
The methodology behind every numeric value on this page is publicly documented on the the FCC Broadband Data Collection (BDC) portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. ZIPs, counties, and states with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: FCC Broadband Data Collection, 2026.