In New Castle County there are 3 residential Fiber providers covering 91.20% of the county. The average home can get speeds up to 1,521 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
This page contains all Fiber internet providers in New Castle County, DE.
To see availability maps for all providers including fiber, cable, DSL, and more in New Castle County, DE please click below.
New Castle County, DE Availability Maps
Fiber Internet Service Providers in New Castle County
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in New Castle County are not shown.
New Castle County Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Where in New Castle County is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 91.20% of New Castle County. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Earthlink. Call one of the companies with service in New Castle County above to see who has service at your home.
How fast is fiber internet in New Castle County?
The map below shows maximum fiber internet speeds by area in New Castle County.
Fiber Internet Speed Key
The average New Castle County home can get up to 1,521 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 2,048 Mbps, which 46.23% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 150 Mbps. See the internet provider details below for info about their speed and coverage in New Castle County.
Fiber internet speeds tend to be faster in the northwest parts of New Castle County, and slower in the north areas of the county.
Is fiber the fastest internet I can get in New Castle County?
The fastest internet for you may vary based on where in New Castle County you live. In general, cable competes most often with fiber in the county.
- Fiber is the fastest internet type for 50.30% of New Castle County homes.
- Cable is fastest for 48.09% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 1.58% of New Castle County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in New Castle County, along with details on where in New Castle County and at what speeds.
EarthLink Fiber in New Castle County, DE
EarthLink fiber coverage
About 91.11%, or 519,970 people, have EarthLink fiber internet available to them in the county. The company covers the entire New Castle County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of New Castle County.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in New Castle County. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are 5 different maximum speeds throughout New Castle County. The fastest plan anyone in New Castle County can order from EarthLink goes up to 2,048 Mbps, the slowest package only goes up to 150 Mbps, and the county-wide average maximum speed for New Castle County customers is up to 1,502 Mbps.
Show all download speeds
- 50.7% up to 2,048.0 Mbps
- 49.2% up to 940.0 Mbps
- 0.0% up to 500.0 Mbps
- 0.0% up to 300.0 Mbps
- 0.0% up to 150.0 Mbps
EarthLink fiber upload speeds
In New Castle County download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is one of the fastest where upload speeds are concerned, and one of the fastest compared to other New Castle County fiber providers. EarthLink offers 5 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in New Castle County is up to 2,048 Mbps. Some customers have slower plan choices, which only go up to 150 Mbps. On average, EarthLink customers can get speeds up to 1,473 Mbps.
Show all upload speeds
- 50.7% up to 2,048.0 Mbps
- 49.2% up to 880.0 Mbps
- 0.0% up to 500.0 Mbps
- 0.0% up to 300.0 Mbps
- 0.0% up to 150.0 Mbps
Verizon Fiber in New Castle County, DE
Verizon fiber coverage
About 91.11%, or 519,970 people, have Verizon fiber internet available to them in the county. The company covers the entire New Castle County area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in most of New Castle County.
Verizon fiber download speeds
Verizon is above average when comparing download speeds to all other internet providers in New Castle County. Versus other fiber providers in the area, Verizon fiber is one of the fastest. There are 5 different maximum speeds throughout New Castle County. The fastest plan anyone in New Castle County can order from Verizon goes up to 2,048 Mbps, the slowest package only goes up to 150 Mbps, and the county-wide average maximum speed for New Castle County customers is up to 1,502 Mbps.
Show all download speeds
- 50.7% up to 2,048.0 Mbps
- 49.2% up to 940.0 Mbps
- 0.0% up to 500.0 Mbps
- 0.0% up to 300.0 Mbps
- 0.0% up to 150.0 Mbps
Verizon fiber upload speeds
In New Castle County download speeds tend to be faster than than upload speeds for Verizon fiber. Compared to other ISPs, Verizon is one of the fastest where upload speeds are concerned, and one of the fastest compared to other New Castle County fiber providers. Verizon offers 5 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in New Castle County is up to 2,048 Mbps. Some customers have slower plan choices, which only go up to 150 Mbps. On average, Verizon customers can get speeds up to 1,473 Mbps.
Show all upload speeds
- 50.7% up to 2,048.0 Mbps
- 49.2% up to 880.0 Mbps
- 0.0% up to 500.0 Mbps
- 0.0% up to 300.0 Mbps
- 0.0% up to 150.0 Mbps
XFINITY from Comcast Fiber in New Castle County, DE
XFINITY fiber coverage
About 4.42%, or 25,212 people, have XFINITY fiber internet available to them in the county. The company covers the southwest, south, west, central, and northeast New Castle County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of New Castle County.
XFINITY from Comcast fiber download speeds
XFINITY is above average when comparing download speeds to all other internet providers in New Castle County. Versus other fiber providers in the area, XFINITY fiber is the slowest. There are 3 different maximum speeds throughout New Castle County. The fastest plan anyone in New Castle County can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for New Castle County customers is up to 1,383 Mbps.
Show all download speeds
- 31.9% up to 2,000.0 Mbps
- 32.3% up to 1,200.0 Mbps
- 35.9% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In New Castle County download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is above average where upload speeds are concerned, and the slowest compared to other New Castle County fiber providers. XFINITY offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in New Castle County is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 539 Mbps.
Show all upload speeds
- 47.6% up to 1,000.0 Mbps
- 20.8% up to 250.0 Mbps
- 31.6% up to 35.0 Mbps
New Castle County Fiber by Area
This information is most helpful to those looking for homes or considering moving to New Castle County or any of the areas nearby.
How does fiber internet in New Castle County compare to the rest of Delaware?
Fiber internet speeds in New Castle County are much faster versus the average speeds in Delaware: 0.00 Mbps in Delaware versus 1,521 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in Delaware is 0.00% versus 91.20% in New Castle County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around New Castle County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber internet look like in other counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- Salem County, NJ: less fiber coverage, slower speeds
- Cecil County, MD: less fiber coverage, faster speeds
- Gloucester County, NJ: less fiber coverage, faster speeds
- Harford County, MD: less fiber coverage, slower speeds
- Carroll County, MD: less fiber coverage, faster speeds
- Washington County, MD: less fiber coverage, faster speeds
- Morgan County, WV: less fiber coverage, faster speeds
- Allegany County, MD: less fiber coverage, slower speeds
- Garrett County, MD: less fiber coverage, faster speeds
- Preston County, WV: less fiber coverage, faster speeds
Counties with Similar Populations
- Monmouth County, NJ: more fiber coverage, faster speeds
- Arapahoe County, CO: less fiber coverage, faster speeds
- Bucks County, PA: more fiber coverage, faster speeds
- Kent County, MI: less fiber coverage, faster speeds
- Providence County, RI: more fiber coverage, slower speeds
- Stanislaus County, CA: less fiber coverage, faster speeds
- Ada County, ID: less fiber coverage, faster speeds
- Ocean County, NJ: less fiber coverage, faster speeds
- Pasco County, FL: less fiber coverage, faster speeds
- Passaic County, NJ: more fiber coverage, faster speeds