Refine your search of 2 BEST Internet providers and 11 Internet plans in Castro Valley. Enter a location to find internet service providers (ISP) in your area.
What are the best Internet providers in Castro Valley for 2025?
Below is the list of top Internet providers in Castro Valley for 2024 - 2025.
- Xfinity (Top Pick)
Best Internet Providers in Castro Valley, CA
Comcast
Cable
Starting from $35/mo.
Up to 2000 Mbps
- 300 Mbps - $40/mo for 12 months
- 500 Mbps - $55/mo for 12 months
Castro Valley, California Internet Provider Availability
- About 100% of Castro Valley residents have access to 1 or more provider.
- About 100% of Castro Valley residents have access to 2 or more providers.
- About 99.61% of Castro Valley residents have access to 3 or more providers.
Best Internet Deals in Castro Valley, CA
Below is the list of best Internet deals available in Castro Valley area. Compare and choose the most suitable package for you and your family. And get special discounts for ordering online!
1. Xfinity 500 Mbps Internet
Xfinity
Speed:
Typical download speed: 584.04 Mbps
Typical upload speed: 117.37 Mbps
Typical latency: 15.35 ms
Typical download speed: 584.04 Mbps
Typical upload speed: 117.37 Mbps
Typical latency: 15.35 ms
Prices Starting At
$55.00/mo
This is an introductory rate. Price includes discount. Reg $95/mo
One-time Fees:
Installation Fee: $39.99 (Self-installation), $100 (Professional install)
Late Payment Fee: $10
Installation Fee: $39.99 (Self-installation), $100 (Professional install)
Late Payment Fee: $10
✅ Verified 2 weeks agoNo term contract
2. Xfinity 2000 Mbps Internet
Xfinity
Speed:
Typical download speed: 2202.94 Mbps
Typical upload speed: 250 Mbps
Typical latency: 14.65 ms
Typical download speed: 2202.94 Mbps
Typical upload speed: 250 Mbps
Typical latency: 14.65 ms
Prices Starting At
$100.00/mo
This is an introductory rate. Price includes discount. Reg $140/mo
One-time Fees:
Installation Fee: $39.99 (Self-installation), $100 (Professional install)
Late Payment Fee: $10
Installation Fee: $39.99 (Self-installation), $100 (Professional install)
Late Payment Fee: $10
✅ Verified 2 weeks agoNo term contract
3. Xfinity 1000 Mbps Internet
Xfinity
Speed:
Typical download speed: 1167.49 Mbps
Typical upload speed: 117.37 Mbps
Typical latency: 15.24 ms
Typical download speed: 1167.49 Mbps
Typical upload speed: 117.37 Mbps
Typical latency: 15.24 ms
Prices Starting At
$70.00/mo
This is an introductory rate. Price includes discount. Reg $110/mo
One-time Fees:
Installation Fee: $39.99 (Self-installation), $100 (Professional install)
Late Payment Fee: $10
Installation Fee: $39.99 (Self-installation), $100 (Professional install)
Late Payment Fee: $10
✅ Verified 2 weeks agoNo term contract
4. Xfinity 300 Mbps Internet
Xfinity
Speed:
Typical download speed: 351.86 Mbps
Typical upload speed: 117.37 Mbps
Typical latency: 15.33 MS
Typical download speed: 351.86 Mbps
Typical upload speed: 117.37 Mbps
Typical latency: 15.33 MS
Prices Starting At
$35.00/mo
This is an introductory rate. Price includes discount. Reg $80/mo
One-time Fees:
Installation Fee: $39.99 (Self-installation), $100 (Professional install)
Late Payment Fee: $10
Installation Fee: $39.99 (Self-installation), $100 (Professional install)
Late Payment Fee: $10
✅ Verified 2 weeks agoNo term contract
5. Sonic 10 Mbps Internet
6. Sonic 100 Mbps Internet
7. Sonic 1 Gbps Internet
Frequently Asked Questions
Who has best Internet service in Castro Valley area?
Both AT&T and Xfinity are the best Internet Service Provider in Castro Valley. The best option for you will depend on your budget and needs. AT&T offers speeds up
to 50 Mbps and is the best option for speed where it's available. Xfinity is also good choice if you're looking for the fastest Internet service.
What is the fastest internet in Castro Valley?
Xfinity is the fastest Cable Internet Service Provider in Castro Valley. Xfinity delivers fast, reliable internet
service in Castro Valley, California. Xfinity offers speeds up to 1200 Mbps and is the best option for speed where it's available.
Who offers the cheapest internet service in Castro Valley, CA?
The cheapest Internet service in Castro Valley is $19.99 per month. Comcast offers 150Mbps Cable Internet for as low as $19.99 per month.
What Internet speed can I get in Castro Valley area?
- Internet download speed in Castro Valley ranges from 25 Mbps to 1200 Mbps. Etheric Networks Fixed Wireless Internet service offers up to 25 Mbps download speed and it is available to 10% of residents in Castro Valley, California. Xfinity Cable Internet service offers up to Mbps download speed and it is available to 100% of residents in Castro Valley, California.
- Internet upload speed in Castro Valley ranges from 3 Mbps to 35 Mbps. Etheric Networks Fixed Wireless Internet service offers up to 3 Mbps upload speed and it is available to 10% of residents in Castro Valley, California. Xfinity Cable Internet service offers up to 1200 Mbps download speed and it is available to 100% of residents in Castro Valley, California.