In Castlegate there are 13 residential internet providers covering 100.00% of the neighborhood. The average home can get speeds up to 8,000 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.
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13 Internet Service Providers in Castlegate
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 Castlegate are not shown.
Castlegate 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
Availability maps for all providers in Castlegate
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 100.00% of Castlegate. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is Quantum Fiber. Now you can call companies in Castlegate with more confidence that they might be available.
How fast are internet speeds in Castlegate?
The map below shows maximum internet speeds by area in Castlegate.
Internet Speed Key
The average Castlegate home can get up to 8,000 Mbps on their internet plan. For most people, the fastest download speed in the neighborhood is 8,000 Mbps, which 100.00% of residents can get.
What type of internet should I choose in Castlegate?
The fastest internet for you may vary based on where in Castlegate you live. If speed is your main concern, fiber will be the fastest internet in the neighborhood.
- Fiber is the fastest internet type for 100.00% of Castlegate homes.
- Cable is fastest for less than 1% of the neighborhood.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of Castlegate homes.
Internet Market Health in Castlegate
Internet Competition Key
The map shows how competitive the Castlegate internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in Castlegate based on what connections the average home has availabile:
- Average number of internet service providers to a home: 8.5 (very healthy)
- Average types of service (fiber, cable, DSL, etc): 3.7 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 8.5 (very healthy)
Overall, competition is very healthy.
Castlegate internet customers have the ability to buy internet service from 6 to 11 different providers, depending on where they live. For different types of service, Castlegate homes have between 3 and 4 options. The type(s) of service available are fixed wireless, fiber, cable, and dsl, though these may vary depending on the region within the neighborhood.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. Castlegate internet customers who want faster speeds have between 6 and 11 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, Castlegate is doing quite well.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Castlegate, along with details on where in Castlegate and at what speeds.
Quantum Fiber Fiber in Castlegate, San Tan Valley, AZ
Quantum Fiber fiber coverage
About 100.00%, or 4,520 people, have Quantum Fiber fiber internet available to them in the neighborhood. The company covers the entire Castlegate area. Quantum Fiber is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Castlegate.
Quantum Fiber fiber download speeds
Quantum Fiber is the fastest when comparing download speeds to all other internet providers in Castlegate. Versus other fiber providers in the area, Quantum Fiber fiber is the fastest. There are no different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from Quantum Fiber goes up to 8,000 Mbps, and all Castlegate customers can get this speed.
Show all download speeds
- 100.0% up to 8,000.0 Mbps
Quantum Fiber fiber upload speeds
In Castlegate download speeds tend to be equal to than upload speeds for Quantum Fiber fiber. Compared to other ISPs, Quantum Fiber is the fastest where upload speeds are concerned, and the fastest compared to other Castlegate fiber providers. Quantum Fiber offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Castlegate is up to 8,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 8,000.0 Mbps
Cox Communications Cable in Castlegate, San Tan Valley, AZ
Cox cable coverage
About 100.00%, or 4,520 people, have Cox cable internet available to them in the neighborhood. The company covers the entire Castlegate area. Cox is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Castlegate.
Cox Communications cable download speeds
Cox is above average when comparing download speeds to all other internet providers in Castlegate. Versus other cable providers in the area, Cox cable is the fastest. There are no different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from Cox goes up to 2,000 Mbps, and all Castlegate customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
Cox Communications cable upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for Cox cable. Compared to other ISPs, Cox is below average where upload speeds are concerned, and the fastest compared to other Castlegate cable providers. Cox offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Castlegate is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
Mediacom Cable in Castlegate, San Tan Valley, AZ
Mediacom cable coverage
About 100.00%, or 4,520 people, have Mediacom cable internet available to them in the neighborhood. The company covers the entire Castlegate area. Mediacom is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Castlegate.
Mediacom cable download speeds
Mediacom is below average when comparing download speeds to all other internet providers in Castlegate. Versus other cable providers in the area, Mediacom cable is the slowest. There are no different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from Mediacom goes up to 1,000 Mbps, and all Castlegate customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Mediacom cable upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for Mediacom cable. Compared to other ISPs, Mediacom is below average where upload speeds are concerned, and the slowest compared to other Castlegate cable providers. Mediacom offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Castlegate is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
Centurylink DSL in Castlegate, San Tan Valley, AZ
Centurylink DSL coverage
About 72.96%, or 3,298 people, have Centurylink DSL internet available to them in the neighborhood. The company covers the south, southwest, north, west, northwest, east, northeast, and southeast Castlegate area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Castlegate.
Centurylink DSL download speeds
Centurylink is below average when comparing download speeds to all other internet providers in Castlegate. Versus other DSL providers in the area, Centurylink DSL is the fastest. There are 5 different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from Centurylink goes up to 100 Mbps, the slowest package only goes up to 10 Mbps, and the neighborhood-wide average maximum speed for Castlegate customers is up to 63 Mbps.
Show all download speeds
- 18.8% up to 100.0 Mbps
- 33.7% up to 80.0 Mbps
- 8.9% up to 60.0 Mbps
- 28.4% up to 40.0 Mbps
- 10.2% up to 10.0 Mbps
Centurylink DSL upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for Centurylink DSL. Compared to other ISPs, Centurylink is below average where upload speeds are concerned, and the fastest compared to other Castlegate DSL providers. Centurylink offers 4 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Castlegate is up to 10 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 6.6 Mbps.
Show all upload speeds
- 52.5% up to 10.0 Mbps
- 8.9% up to 5.0 Mbps
- 28.4% up to 3.0 Mbps
- 10.2% up to 1.0 Mbps
EarthLink Fixed Wireless in Castlegate, San Tan Valley, AZ
EarthLink fixed wireless coverage
About 100.00%, or 4,520 people, have EarthLink fixed wireless internet available to them in the neighborhood. The company covers the entire Castlegate area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Castlegate.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Castlegate. Versus other fixed wireless providers in the area, EarthLink fixed wireless is below average. There are 2 different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the neighborhood-wide average maximum speed for Castlegate customers is up to 90 Mbps.
Show all download speeds
- 86.6% up to 100.0 Mbps
- 13.4% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and below average compared to other Castlegate fixed wireless providers. EarthLink offers 2 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Castlegate is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 18 Mbps.
Show all upload speeds
- 86.6% up to 20.0 Mbps
- 13.4% up to 3.0 Mbps
AT&T Fixed Wireless in Castlegate, San Tan Valley, AZ
AT&T fixed wireless coverage
About 100.00%, or 4,520 people, have AT&T fixed wireless internet available to them in the neighborhood. The company covers the entire Castlegate area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Castlegate.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Castlegate. Versus other fixed wireless providers in the area, AT&T fixed wireless is below average. There are 2 different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the neighborhood-wide average maximum speed for Castlegate customers is up to 90 Mbps.
Show all download speeds
- 86.6% up to 100.0 Mbps
- 13.4% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and below average compared to other Castlegate fixed wireless providers. AT&T offers 2 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Castlegate is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 18 Mbps.
Show all upload speeds
- 86.6% up to 20.0 Mbps
- 13.4% up to 3.0 Mbps
T-Mobile Home Internet Fixed Wireless in Castlegate, San Tan Valley, AZ
T-Mobile Home Internet fixed wireless coverage
About 100.00%, or 4,520 people, have T-Mobile Home Internet fixed wireless internet available to them in the neighborhood. The company covers the entire Castlegate area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Castlegate.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is the slowest when comparing download speeds to all other internet providers in Castlegate. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is the slowest. There are no different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from T-Mobile Home Internet goes up to 25 Mbps, and all Castlegate customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is the slowest where upload speeds are concerned, and the slowest compared to other Castlegate fixed wireless providers. T-Mobile Home Internet offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Castlegate is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
TREPIC Networks Fixed Wireless in Castlegate, San Tan Valley, AZ
TREPIC Networks fixed wireless coverage
About 84.05%, or 3,799 people, have TREPIC Networks fixed wireless internet available to them in the neighborhood. The company covers the south, southwest, north, west, northwest, east, central, and southeast Castlegate area. TREPIC Networks is a large internet service provider internet service providers in the US, with internet service available in much of Castlegate.
TREPIC Networks fixed wireless download speeds
TREPIC Networks is below average when comparing download speeds to all other internet providers in Castlegate. Versus other fixed wireless providers in the area, TREPIC Networks fixed wireless is below average. There are no different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from TREPIC Networks goes up to 150 Mbps, and all Castlegate customers can get this speed.
Show all download speeds
- 100.0% up to 150.0 Mbps
TREPIC Networks fixed wireless upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for TREPIC Networks fixed wireless. Compared to other ISPs, TREPIC Networks is below average where upload speeds are concerned, and below average compared to other Castlegate fixed wireless providers. TREPIC Networks offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Castlegate is up to 30 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 30.0 Mbps
Verizon Fixed Wireless in Castlegate, San Tan Valley, AZ
Verizon fixed wireless coverage
About 59.16%, or 2,674 people, have Verizon fixed wireless internet available to them in the neighborhood. The company covers the south, southwest, north, west, northwest, east, and northeast Castlegate area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Castlegate.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in Castlegate. Versus other fixed wireless providers in the area, Verizon fixed wireless is average. There are no different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from Verizon goes up to 300 Mbps, and all Castlegate customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and below average compared to other Castlegate fixed wireless providers. Verizon offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Castlegate is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
CopperNet Systems Fixed Wireless in Castlegate, San Tan Valley, AZ
CopperNet Systems fixed wireless coverage
About 21.13%, or 955 people, have CopperNet Systems fixed wireless internet available to them in the neighborhood. The company covers the south and southeast Castlegate area. CopperNet Systems is a large internet service provider internet service providers in the US, with internet service available in a small portion of Castlegate.
CopperNet Systems fixed wireless download speeds
CopperNet Systems is below average when comparing download speeds to all other internet providers in Castlegate. Versus other fixed wireless providers in the area, CopperNet Systems fixed wireless is above average. There are no different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from CopperNet Systems goes up to 400 Mbps, and all Castlegate customers can get this speed.
Show all download speeds
- 100.0% up to 400.0 Mbps
CopperNet Systems fixed wireless upload speeds
In Castlegate download speeds tend to be faster than than upload speeds for CopperNet Systems fixed wireless. Compared to other ISPs, CopperNet Systems is below average where upload speeds are concerned, and below average compared to other Castlegate fixed wireless providers. CopperNet Systems offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Castlegate is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
Tristate Wi-Fi Fixed Wireless in Castlegate, San Tan Valley, AZ
Tristate Wi-Fi fixed wireless coverage
About 16.31%, or 737 people, have Tristate Wi-Fi fixed wireless internet available to them in the neighborhood. The company covers the south Castlegate area. Tristate Wi-Fi is a large internet service provider internet service providers in the US, with internet service available in a small portion of Castlegate.
Tristate Wi-Fi fixed wireless download speeds
Tristate Wi-Fi is below average when comparing download speeds to all other internet providers in Castlegate. Versus other fixed wireless providers in the area, Tristate Wi-Fi fixed wireless is the fastest. There are no different maximum speeds throughout Castlegate. The fastest plan anyone in Castlegate can order from Tristate Wi-Fi goes up to 1,000 Mbps, and all Castlegate customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Tristate Wi-Fi fixed wireless upload speeds
In Castlegate download speeds tend to be equal to than upload speeds for Tristate Wi-Fi fixed wireless. Compared to other ISPs, Tristate Wi-Fi is above average where upload speeds are concerned, and the fastest compared to other Castlegate fixed wireless providers. Tristate Wi-Fi offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Castlegate is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Castlegate Internet by Area
This information is most helpful to those looking for homes or considering moving to Castlegate or any of the areas nearby.
How does internet in Castlegate compare to the rest of San Tan Valley?
Internet speeds in Castlegate are faster versus the average speeds in San Tan Valley: 7,035 Mbps in San Tan Valley versus 8,000 Mbps in the neighborhood. The city has similar internet availability compared to the neighborhood. Average internet coverage in San Tan Valley is 99.96% versus 100.00% in Castlegate.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Castlegate are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service look like in other neighborhoods?
Below are neighborhoods nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Neighborhoods
- Pecan Creek, San Tan Valley, AZ: equal internet coverage, similar speeds
- Circle Cross Ranch, San Tan Valley, AZ: equal internet coverage, similar speeds
- Power Ranch, Gilbert, AZ: equal internet coverage, slower speeds
- Palm Springs, Apache Junction, AZ: equal internet coverage, slower speeds
- San Tan Ranch, Gilbert, AZ: less internet coverage, slower speeds
- Southeast Mesa, Mesa, AZ: less internet coverage, slower speeds
- Sun Groves, Chandler, AZ: equal internet coverage, slower speeds
- Northeast, Mesa, AZ: less internet coverage, slower speeds
- Heritage District, Gilbert, AZ: equal internet coverage, slower speeds
- The Islands, Gilbert, AZ: equal internet coverage, slower speeds
Neighborhoods with Similar Populations
- Mullford Gardens, San Leandro, CA: equal internet coverage, faster speeds
- Centerville, West Warwick, RI: equal internet coverage, slower speeds
- Central Area, Eden, NC: less internet coverage, slower speeds
- Cottage Park, Mobile, AL: equal internet coverage, slower speeds
- Elvehjem, Madison, WI: equal internet coverage, slower speeds
- Falcon Landing, Katy, TX: equal internet coverage, slower speeds
- Five Points, Detroit, MI: equal internet coverage, slower speeds
- Florida Shores, Edgewater, FL: equal internet coverage, faster speeds
- Fruitdale, Wheat Ridge, CO: equal internet coverage, slower speeds
- Keeney, Manchester, CT: equal internet coverage, slower speeds