Fiber is actively arriving in Sussex County. It reached 7,757 more locations here in the last twelve months. Check whether your own address is inside a build before committing to anything with a contract.
Everything below comes from the FCC's Broadband Data Collection, the filings providers are legally required to make about where they offer service. It describes the county; your own address can differ, and that is exactly why the technology mix matters.
Where Sussex County sits in Delaware
Share of addresses with no fixed broadband at 25/3 Mbps
0.0% to 0.4%
0.4% and above
NaN% and above
NaN% and above
NaN% and above
NaN% and above
NaN% and above
not published
This county is outlined. Darker means a larger share of addresses with no fixed broadband. Select any county to open it.
What reaches homes in Sussex County
Locations covered by each technology, out of 146,574 broadband serviceable locations. An address can be reached by more than one technology, so these add up to more than 100%.
Fiber35,274 · 24%
Cable132,806 · 91%
Licensed fixed wireless55,343 · 38%
Unlicensed fixed wireless4,039 · 2.8%
DSL over copper0 · 0.0%
Served, underserved, unserved
The FCC's three categories. "Served" means at least 100/20 Mbps is available; "underserved" means at least 25/3 but below 100/20; "unserved" means below 25/3 or nothing at all.
Category
Locations
Share of county
Served
143,154
97.7%
Underserved
2,877
2.0%
Unserved
543
0.4%
What that means if you live here
The USDA classes Sussex County as a nonmetro county with an urban population of 20,000 or more, adjacent to a metro area (continuum code 4).
About 247,527 people live across those locations, roughly 1.7 people per serviceable address.
Only 543 locations, 0.4%, are recorded with nothing at 25/3 Mbps or better.
The most widely available technology here is cable, reaching 132,806 locations (90.6%); next is licensed fixed wireless at 37.8%.
Fiber reaches 35,274 locations, 24.1% of the county.
Licensed fixed wireless covers 37.8% of the county. It does not reach as far as cable does here, but it reaches places cable does not.
Cable reaches 90.6% of locations, more than fiber does, and it will be concentrated in the built-up parts of the county.
Filings come from 14 providers, of which 7 offer fiber and 4 licensed fixed wireless.
Fiber reached 7,757 more locations in Sussex County over the last twelve months, a 5.3% swing in the county's total.
Served locations rose 2.33% year on year.
Fiber lags the rest of Delaware, where the median county is at 39.9%.
What people actually measure in Delaware
Median of real speed tests run on each network during 2024, from M-Lab. This is measured performance, not an advertised plan speed, and not a customer review. The middle-half column shows how consistent a network is: a wide spread means your experience depends heavily on where and when.
Network
Median download
Middle half of tests
Median upload
Latency
Tests
Comcast Cable Communications
129 Mbps
49.6 Mbps to 315 Mbps
20.5 Mbps
12 ms
29,251
Verizon Business
162 Mbps
53.7 Mbps to 358 Mbps
92.5 Mbps
11 ms
17,684
Mediacom Communications
109 Mbps
55.1 Mbps to 228 Mbps
24.1 Mbps
42 ms
3,956
Mediatti Broadband Communications
171 Mbps
75.1 Mbps to 273 Mbps
26.1 Mbps
61 ms
1,430
Leaseweb USA
10.9 Mbps
2.3 Mbps to 44.3 Mbps
0.3 Mbps
24 ms
1,258
Hughes Network Systems
17.6 Mbps
7.2 Mbps to 40.5 Mbps
2.3 Mbps
59 ms
260
Breezeline
71.6 Mbps
33.1 Mbps to 125 Mbps
20.3 Mbps
11 ms
250
Crown Castle Fiber
33.2 Mbps
8.8 Mbps to 188 Mbps
9.5 Mbps
10 ms
207
Cellular networks, measured
The same measurement for the mobile networks behind 5G home internet. These tests come from phones as well as home gateways, so treat them as an indication of network health in the state rather than a home-internet plan speed.
Network
Median download
Middle half of tests
Median upload
Latency
Tests
T-Mobile USA
24.8 Mbps
9.0 Mbps to 103 Mbps
8.2 Mbps
28 ms
206
Latency is the number that decides whether video calls and gaming feel right, and it is where satellite differs most from everything else. Measured data is statewide: below county level there are usually too few tests to report an honest number.
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Your realistic options in Sussex County
Fiber
Fiber, if it has reached you
The best outcome by a distance: symmetric speed, low latency, no weather sensitivity, no data ceiling in practice.
Best for
Anyone whose address is inside a fiber build. Always check this first.
Watch out
Coverage stops abruptly at the edge of a build. Being a mile from fiber is the same as being fifty.
5G home internet
T-Mobile Home Internet
Home internet over T-Mobile’s cellular network. A gateway box you plug in yourself; no truck roll, no dish.
Best for
Rural addresses that still get a usable T-Mobile signal, often near a highway or a town
Watch out
Availability is decided address by address, not by town. Speed varies with how busy the local tower is.