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#1 Recommended Plan
AT&T 
Speeds Up To300 MbpsIn rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a min. of 30 min.Connection: 5G InternetAvailability: 14.1%Why AT&T? AT&T Internet Air makes buying internet easy for customers by offering one plan with straightforward pricing and reliable 5G speeds. -
2. Viasat 
Speeds Up To150 MbpsNot all internet speeds available in all areas.Connection: SatelliteAvailability: 100% -
3. T-Mobile 
Download Speeds:87 Mbps - 415 MbpsRely, All-In, and Amplified Internet plans can experience fast speeds with T-Mobile’s latest 5G gateway, delivering typical download speeds between 133 Mbps – 415 Mbps. 25% of our customers see speeds below and 25% see speeds above these ranges. T-Mobile Home Internet is delivered via 5G cellular network and speeds vary due to factors affecting cellular networks. See https://t-mobile.com/OpenInternet for additional details.Connection: 5G InternetAvailability: 41.1% -
4. Verizon 
Speeds Up To300 MbpsNot all internet speeds available in all areas.Connection: 5G InternetAvailability: 52.1% -
5. CenturyLink 
Speeds Up To80 MbpsNot all internet speeds available in all areas.Connection: DSLAvailability: 31.8% -
6. XNET WiFi 
Speeds Up To2 GbpsNot all internet speeds available in all areas.Connection: Fixed WirelessAvailability: 41.2% -
7. Fort Randall Telephone Company 
Speeds Up To1 GbpsNot all internet speeds available in all areas.Connection: FiberAvailability: 42.4% -
8. Starlink 
Speeds Up To350 MbpsNot all internet speeds available in all areas.Connection: SatelliteAvailability: 100% -
9. Hughesnet 
Speeds Up To100 MbpsNot all internet speeds available in all areas.Connection: SatelliteAvailability: 100%
Internet Providers in Keystone, SD
Refine your search for better results:
Popular Keystone Internet Deals
| Provider | Featured deal | |
|---|---|---|
| Viasat | Get $30 off for your first 3 months! Price shown includes promotion; Get $30/mo. off for the first 3 months. For new customers only. You must mention this offer when ordering service to receive the discount. |
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| T-Mobile | Limited time. Get a $300 rebate (via virtual prepaid Mastercard) when you activate a new T-Mobile Internet line on an eligible All-In Home Internet plan! |
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| Verizon | Get a 43" Class QF QLED Samsung TV or Samsung Galaxy Tab S10 FE 5G on us! |
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| XNET WiFi | Get unlimited data and Wi-Fi that works anywhere with XNET WiFi! |
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| Starlink | Enjoy discounted monthly rates and Standard Kits for your first year! Available in select markets. |
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Keystone Home Internet Providers
| Provider | Plans starting at | Speeds up to | Connections | |
|---|---|---|---|---|
| Verizon | $35/mo Prices may vary depending on the plan. | 300 Mbps Not all internet speeds available in all areas. | 5G Internet |
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| Hughesnet | $39.99/mo Prices may vary depending on the plan. | 100 Mbps Not all internet speeds available in all areas. | Satellite |
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| Starlink | $49/mo Prices may vary depending on the plan. | 350 Mbps Not all internet speeds available in all areas. | Satellite |
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| T-Mobile | $50/mo Prices may vary depending on the plan. | 87 Mbps - 415 Mbps Rely, All-In, and Amplified Internet plans can experience fast speeds with T-Mobile’s latest 5G gateway, delivering typical download speeds between 133 Mbps – 415 Mbps. 25% of our customers see speeds below and 25% see speeds above these ranges. T-Mobile Home Internet is delivered via 5G cellular network and speeds vary due to factors affecting cellular networks. See https://t-mobile.com/OpenInternet for additional details. | 5G Internet |
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| CenturyLink | $55/mo Prices may vary depending on the plan. | 80 Mbps Not all internet speeds available in all areas. | DSL |
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| AT&T | $65/mo Price is per month, plus taxes. Price after discounts: $13/mo w/elig wireless svc. and $5/mo w/elig Autopay & Paperless bill. Discounts start w/in 2 bills. | 300 Mbps In rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a min. of 30 min. | 5G Internet |
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| XNET WiFi | $65/mo Prices may vary depending on the plan. | 2 Gbps Not all internet speeds available in all areas. | Fixed Wireless |
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| Viasat | $69.99/mo Price shown includes promotion; Get $30/mo. off for first 3 months. For new customers only. You must mention this offer when ordering service to receive the discount. | 150 Mbps Not all internet speeds available in all areas. | Satellite |
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| Fort Randall Telephone Company | $85.39/mo Prices may vary depending on the plan. | 1 Gbps Not all internet speeds available in all areas. | Fiber |
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Best Internet Providers in Keystone, SD
Fort Randall Telephone Company offers the best fiber connectivity in Keystone, South-Dakota. Fort Randall Telephone Company provides symmetrical speeds up to 1 Gbps for a starting price of $85.39 per month. While Verizon 5G Home Internet covers 52.1% of the city, Fort Randall Telephone Company is the premium choice for performance.
| Provider | Why they're great | Who they're great for | |
|---|---|---|---|
| AT&T | Easy installation | Customers who want to skip the technician and get online in minutes will love the simple plug-and-play setup provided by AT&T Internet Air. |
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| T-Mobile | Straightforward pricing | Customers who hate hidden costs and want straightforward pricing with no equipment fees and taxes included will love T-Mobile 5G Home Internet. |
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| Verizon | Cheapest provider | Verizon 5G Home Internet is an incredible value for budget-conscious customers looking for an affordable rate and reliable home Wi-Fi. |
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| XNET WiFi | Fastest provider | XNET WiFi is a powerful alternative for areas near [city], delivering high-speed performance by leveraging the best available local network. |
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| Viasat | Unlimited data | High-data households wanting consistent streaming and large downloads without worrying about hard data caps will find Viasat a strong choice. |
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Keystone Cheapest Internet Plans
Verizon 5G Home Internet is the most affordable broadband option in Keystone, South-Dakota. Plans for Verizon 5G Home Internet start at $35 per month, significantly undercutting Hughesnet which starts at $39.99 per month. Verizon 5G Home Internet reaches 52.1% of the area with reliable 5G technology.
| Provider | Plan name | Price | Speeds up to | |
|---|---|---|---|---|
| Verizon | Verizon Home Internet Lite | $35/mo Prices may vary depending on the plan. | 25 Mbps Not all internet speeds available in all areas. |
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| Viasat | Viasat Essentials | $39.99/mo Price shown includes promotion; Get $30/mo. off for first 3 months. For new customers only. You must mention this offer when ordering service to receive the discount. | 50 Mbps Not all internet speeds available in all areas. |
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| Hughesnet | Lite | $39.99/mo Prices may vary depending on the plan. | 25 Mbps Not all internet speeds available in all areas. |
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| T-Mobile | Rely Home Internet | $50/mo Prices may vary depending on the plan. | 415 Mbps Rely, All-In, and Amplified Internet plans can experience fast speeds with T-Mobile’s latest 5G gateway, delivering typical download speeds between 133 Mbps – 415 Mbps. 25% of our customers see speeds below and 25% see speeds above these ranges. T-Mobile Home Internet is delivered via 5G cellular network and speeds vary due to factors affecting cellular networks. See https://t-mobile.com/OpenInternet for additional details. |
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| Starlink | Roam 100GB | $50/mo Prices may vary depending on the plan. | 260 Mbps Not all internet speeds available in all areas. |
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Fastest Internet Providers in Keystone, SD
XNET WiFi delivers the highest download rates in Keystone, South-Dakota with speeds up to 2 Gbps. XNET WiFi maxes out at $140 per month for its top-tier plan. For those requiring symmetrical speeds, Fort Randall Telephone Company serves as a high-speed alternative reaching up to 1 Gbps.
| Provider | Speeds up to | Connection type | |
|---|---|---|---|
| XNET WiFi | 2 Gbps Not all internet speeds available in all areas. | Fixed Wireless |
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| Fort Randall Telephone Company | 1 Gbps Not all internet speeds available in all areas. | Fiber |
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| T-Mobile | 87 Mbps - 415 Mbps Rely, All-In, and Amplified Internet plans can experience fast speeds with T-Mobile’s latest 5G gateway, delivering typical download speeds between 133 Mbps – 415 Mbps. 25% of our customers see speeds below and 25% see speeds above these ranges. T-Mobile Home Internet is delivered via 5G cellular network and speeds vary due to factors affecting cellular networks. See https://t-mobile.com/OpenInternet for additional details. | 5G Internet |
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| Starlink | 350 Mbps Not all internet speeds available in all areas. | Satellite |
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| AT&T | 300 Mbps In rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a min. of 30 min. | 5G Internet |
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Compare Top Providers in Your Area
- AT&T Internet vs. CenturyLink
- AT&T Internet vs. T-Mobile 5G Home Internet
- AT&T Internet vs. Verizon 5G Home Internet
- CenturyLink vs. T-Mobile 5G Home Internet
- CenturyLink vs. Verizon 5G Home Internet
- Hughesnet vs. Viasat Internet
- Hughesnet vs. T-Mobile 5G Home Internet
- Hughesnet vs. Verizon 5G Home Internet
- Starlink vs. Viasat Internet
- T-Mobile 5G Home Internet vs. Verizon 5G Home Internet
- Viasat Internet vs. T-Mobile 5G Home Internet
- Viasat Internet vs. Verizon 5G Home Internet
Check Your Current Speed
What's a Good Internet Speed?
| Internet speed | Appropriate for | Providers in your area offering this speed | Availability in your area |
|---|---|---|---|
| 100 Mbps |
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100% |
| 1000 Mbps (1 Gbps) |
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|
42.4% |
Internet Availability in Keystone, SD
Verizon 5G Home Internet maintains the strongest terrestrial presence in Keystone, South-Dakota, covering 52.1% of the city. Verizon 5G Home Internet offers speeds up to 300 Mbps for a maximum of $75 per month. Residents outside the Verizon 5G Home Internet footprint typically rely on Viasat Internet for total area coverage.
| Connection type | Provider with most coverage | Keystone availability | Starting price | |
|---|---|---|---|---|
| Satellite | Hughesnet | 100% | $39.99/mo |
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| 5G Internet | Verizon 5G Home Internet | 52.1% | $35/mo |
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| Fiber | Fort Randall Telephone Company | 42.4% | $85.39/mo |
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| Fixed Wireless | XNET WiFi | 41.2% | $65/mo |
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| DSL | CenturyLink | 31.8% | $55/mo |
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Keystone Internet Stats
| Average internet monthly cost | Available speed ranges | Available price range | Available connection types |
|---|---|---|---|
| $76.47 | 12 Mbps - 2 Gbps | $20/mo - $165/mo | 5G Internet, DSL, Fiber, Fixed Wireless, Satellite |
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Fastest Speed
XNET WiFiFixed Wireless
5G Unlimited Internet$140/mo*Taxes & fees extra and subj. to change. See disclaimer for details. Restrictions apply.
Plug-and-play installation-
Download Speeds up to 2 Gbps
Show Details -
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Best Value
AT&T Internet Air5G Internet
Internet Air$65/mo*Price is per month, plus taxes. Not available in all areas. Price after discounts: 20% w/elig wireless and $5/mo with AutoPay. Discount applied w/in 2 bills. See offer details
$100 Visa Reward Card | Save 20% with Eligible AT&T Wireless Plan-
Download Speeds up to 300 Mbps
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Perfect speeds for most families
Show Details -
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Lowest Price
Verizon 5G Home Internet5G Internet
Verizon Home Internet Lite$35/mo*Taxes & fees extra and subj. to change. See disclaimer for details. Restrictions apply. See offer details
3-year price lock guarantee-
Download Speeds up to 25 Mbps
Show Details -
Internet Coverage Map and Store Locations for Keystone, South Dakota
Methodology
Our provider rankings rely on a rigorous, data-driven framework evaluating over 100 million rows of FCC data to bring transparency to local internet options. We track 8,000+ active plans from 2,000+ providers to cut through marketing jargon. We weigh technical factors against real-world experiences to match you with the best connections actually available at your address:
- Tested Technology: We utilize a fiber-first ranking system, prioritizing high-performance, structurally sound technologies (like fiber and cable) over slower legacy connections.
- Realistic Coverage: We filter out "ghost ISPs" with near-zero availability and actively flag providers that only cover a fraction of neighborhoods, ensuring you don't waste time on unavailable options.
- Transparent Pricing: We track base rates and downgrade providers that rely on hidden fees or sudden price hikes, exposing the true long-term cost beyond initial marketing promotions.
- Verified Speeds: We look beyond deceptive "up to" marketing claims to evaluate the actual download and upload speeds delivered, prioritizing the balanced, symmetrical performance necessary for seamless video calls and heavy streaming.
- User-Driven Personalization: We don't just look at the tech; we look at what people actually prefer. By analyzing millions of local connections, user reviews on downtime, and validated J.D. Power scores, we tailor our rankings to highlight the providers proven to satisfy users in your area.
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Data valid as of 03/25/2026