5 Year Price Guarantee! Home Internet Plans, No Contract
Get 400 Mpbs home internet, WiFi equipment, and unlimited data. Pricing & other info
Pricing & other info Restrictions apply. Not available in all areas. Savings claim: Compares 2-year promotional and 3-year post-promotional price for Connect More internet and 1 Unlimited line vs. 5-year internet price guarantee for Connect More internet and promotional/post-promotional price for 1 Unlimited line. 5-Year Price Guarantee: Offer ends 06/23/2025. New residential customers only. Limited to 400 Mbps internet (5 years) and 1 Xfinity Mobile Unlimited line (1 year). Xfinity Gateway with xFiComplete (or add’l$30/mo) required for unlimited internet data except in certain areas. Requires enrollment in and maintaining both paperless billing and automatic payments with stored bank account or monthly service charge increases by $10 (or $8 with credit or debit card). Installation, taxes and fees, and other applicable charges extra, and subj. to change during and after the promo. After promo, or if any service is cancelled or downgraded, regular rates apply to all services and devices. Service limited to a single outlet. Internet: Actual speeds vary and are not guaranteed. For factors affecting speed visit www.xfinity.com/networkmanagement. 1 Unlimited Line: New Unlimited line must be activated within 90 days. Discount limited to value of one Unlimited line per account and will appear on mobile bill within 30 days of activation. After 12 months, or if Internet service is canceled or downgraded or Unlimited line is changed to By the Gig, regular mobile rates apply. Xfinity Mobile: Xfinity or NOW Internet required. $25 one-time activation fee/line applies. Equip., intl. and roaming charges, taxes and fees, including reg. recovery fees, and other charges extra, and subj. to change. Pricing subj. to change. $25/mo charge applies if Xfinity TV, Voice or Internet not maintained. When a line exceeds its monthly premium data allowance, data may be temporarily slower than other traffic in times of congestion. Speeds on Unlimited plan reduced to a maximum of 1.5Mbps download/750 Kbps upload after 30GBs of data/line. Data thresholds may vary. For Xfinity Mobile Broadband Disclosures visit: www.xfinity.com/mobile/policies/broadband-disclosures. © 2025 Comcast. All rights reserved.
Your internet service provider in Castle Rock
Learn more about Xfinity in Castle Rock, CO
Xfinity Internet
Do more of what you love with a fast, reliable connection
No Annual Contract
One internet price. 5 years. Guaranteed
Save $1,400+ with our 5-Year Price Guarantee.
Shop internetOffer ends 6/25/2025. Restrictions apply. Autopay w/stored bank account and paperless billing req'd. Taxes and fees extra and subj. to change. Xfinity Mobile req's Xfinity Int. Reduced speeds after 30 GB or usage/line. Data thresholds may vary.
Buy online, pick up in store
Select in-store pickup when you shop for Xfinity Internet and pick up your equipment as soon as today at eligible addresses.
Shop internet
Moving made easy
Xfinity provides internet service in the Castle Rock area.
Set up a move or transfer your service in three simple steps.
Schedule a move
Over 99.9% rock solid reliability
The whole crew can be online at the same time with minimal interruptions, even during peak hours.
Shop internet
No Annual ContractOne internet price. 5 years. GuaranteedSave $1,400+ with our 5-Year Price Guarantee.Shop internetOffer ends 6/25/2025. Restrictions apply. Autopay w/stored bank account and paperless billing req'd. Taxes and fees extra and subj. to change. Xfinity Mobile req's Xfinity Int. Reduced speeds after 30 GB or usage/line. Data thresholds may vary.
Buy online, pick up in storeSelect in-store pickup when you shop for Xfinity Internet and pick up your equipment as soon as today at eligible addresses.Shop internet
Moving made easyXfinity provides internet service in the Castle Rock area. Set up a move or transfer your service in three simple steps.Schedule a move
Over 99.9% rock solid reliabilityThe whole crew can be online at the same time with minimal interruptions, even during peak hours.Shop internet
Xfinity Mobile
Enjoy nationwide 5G coverage in Castle Rock, CO on the latest phones, or bring your own and save with Xfinity Mobile.
Xfinity Mobile
Mobile at your speed
Connect with the best price for two lines of Unlimited, plus mix and match data options on one plan.
Shop mobile
Nationwide coverage
With premium data and Xfinity WiFi hotspots that are now up to 10x faster than before in millions of locations nationwide.
Check coverage
Xfinity MobileMobile at your speedConnect with the best price for two lines of Unlimited, plus mix and match data options on one plan.Shop mobile
Nationwide coverageWith premium data and Xfinity WiFi hotspots that are now up to 10x faster than before in millions of locations nationwide.Check coverage
TV & Streaming
Watch all your favorite shows, movies, and sports with Xfinity.
X1 TV
Watch anytime, anywhere
Enjoy live TV, On Demand, sports, and your favorite streaming apps all in one place with Xfinity TV.
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Xumo Stream Box from Xfinity
All you can stream
From action to comedy to reality and more - there's something for everyone on the Xumo Stream Box from Xfinity.
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Watch what you love with NOW TV
Ditch the annual contracts and fees. NOW TV gives you access to your favorite live and on demand TV for on $20/mo.
Shop NOW TV
StreamSaver
Save 40% on your favorite streaming services
Get Netflix, Peacock, and Apple TV+ when you add StreamSaver with Xfinity Internet.
Shop StreamSaverRestrictions apply. Xfinity Internet req'd. Taxes extra. Pricing subj. to change. Compares StreamSaver ($15/mo) vs. Netflix Standard with Ads ($6.99/mo), Apple TV+ ($9.99/mo), and Peacock Premium with ads ($7.99/mo).
X1 TVWatch anytime, anywhereEnjoy live TV, On Demand, sports, and your favorite streaming apps all in one place with Xfinity TV.Shop X1
Xumo Stream Box from XfinityAll you can streamFrom action to comedy to reality and more - there's something for everyone on the Xumo Stream Box from Xfinity.Shop
Watch what you love with NOW TVDitch the annual contracts and fees. NOW TV gives you access to your favorite live and on demand TV for on $20/mo.Shop NOW TV
StreamSaverSave 40% on your favorite streaming servicesGet Netflix, Peacock, and Apple TV+ when you add StreamSaver with Xfinity Internet.Shop StreamSaverRestrictions apply. Xfinity Internet req'd. Taxes extra. Pricing subj. to change. Compares StreamSaver ($15/mo) vs. Netflix Standard with Ads ($6.99/mo), Apple TV+ ($9.99/mo), and Peacock Premium with ads ($7.99/mo).
More from Xfinity
From home protection to business solutions, Xfinity has you covered.
Xfinity Home Security
Get enhanced protection with Xfinity Home
Enjoy total flexibility and no term contracts with Self Protection, starting at only $10/mo.
Shop Home Security
Keep watch with Xfinity Cameras
Easily keep an eye on your home from anywhere with Xfinity Cameras and the Xfinity app. Get notified when your camera detects motion in real time, including live HD video with night vision capabilities.
Shop cameras
Comcast Business
Powered by the nation’s largest gig-speed network, Comcast Business delivers internet, phone, TV, video monitoring, and cloud solutions.
Shop Business InternetShop Business Mobile
Xfinity Home SecurityGet enhanced protection with Xfinity HomeEnjoy total flexibility and no term contracts with Self Protection, starting at only $10/mo.Shop Home Security
Keep watch with Xfinity CamerasEasily keep an eye on your home from anywhere with Xfinity Cameras and the Xfinity app. Get notified when your camera detects motion in real time, including live HD video with night vision capabilities.Shop cameras
Comcast BusinessPowered by the nation’s largest gig-speed network, Comcast Business delivers internet, phone, TV, video monitoring, and cloud solutions.Shop Business InternetShop Business Mobile
Our services work even better together
Xfinity Stores in Castle Rock, CO
Frequently Asked Questions
Xfinity Mobile is only available to our Xfinity Internet post-pay customers. If you don't have Xfinity Internet yet, sign up now and begin using our mobile services. If you have Xfinity Internet, you can bring your own phone to Xfinity Mobile.
Yes, Xfinity Mobile carries the latest Apple and Samsung devices. View the latest phones, prices, and key features:
Shop iPhone 16 Series:
Shop Galaxy S25 Series:
Protect your new phone today with Xfinity Mobile Care. Add it at checkout when you purchase a new phone or tablet for damage, loss, and theft coverage.
NOW Internet is a new high-speed home internet option backed by the reliable Xfinity network to give you a consistent connection at a great value.
NOW Mobile is a flexible, affordable, prepaid mobile service backed by the Xfinity network. It’s everything you’d want from a mobile phone plan: unlimited data, calls, and texts without credit checks or long-term agreements.Get the facts about 5G home internet before you choose your next internet provider and decide for yourself!
Choose from a range of fast, reliable home internet speeds to fit your needs - from on-the-go WiFi passes to gig-speed internet. Compare options for Internet speeds in Castle Rock. See how fast your current internet or mobile plan is with our internet speed test!
Xfinity Internet prices and speeds vary by location. Compare plans and prices for your address online.
Choose the best internet service provider in Castle Rock – Xfinity! Compare home internet offers, pricing, and Xfinity availability at xfinity.com or visit your local Xfinity store to learn more about our internet services in your area.