# Best Fiber Internet Providers in Sioux Falls, SD (2026)
Sioux Falls is South Dakota's largest city, and fiber availability is growing. SDN Communications offers true fiber-to-the-home service, while Midco's hybrid fiber-coaxial network covers the broadest area. For residents who can get dedicated fiber, it delivers symmetrical speeds and a fundamentally better connection than cable.
Fiber Internet Providers in Sioux Falls
### 1. SDN Communications SDN (South Dakota Network) is a regional fiber provider serving commercial and residential customers in Sioux Falls with true FTTH service.
**Speeds:** 100 Mbps – 1 Gbps (symmetrical) **Type:** Fiber optic (FTTH) **Best for:** Sioux Falls addresses where available -- best performance
Cable & Other Alternatives
If fiber isn't available at your address yet, these providers offer service in Sioux Falls:
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Check My Address### Midco (Midcontinent Communications) Midco is headquartered in Sioux Falls and covers most of the city with a hybrid fiber-coaxial network. While locally operated with responsive customer support, Midco's cable technology delivers asymmetric speeds with slower uploads and shared bandwidth.
**Speeds:** 100 Mbps – 1 Gbps **Starting price:** ~$45/mo **Type:** Hybrid fiber-coaxial
### Xfinity (Comcast) [Xfinity](/providers/xfinity) serves parts of Sioux Falls as an additional cable option. Xfinity imposes a 1.2 TB/month data cap.
**Speeds:** 75 Mbps – 1,200 Mbps **Starting price:** ~$35/mo (introductory) **Type:** Cable (coaxial) **Data cap:** 1.2 TB/month
### T-Mobile Home Internet [T-Mobile Home Internet](/providers/t-mobile) 5G covers Sioux Falls.
**Speeds:** 100–400 Mbps **Starting price:** ~$50/mo **Type:** Fixed wireless (5G)
FAQ
**Is fiber available in Sioux Falls?** SDN Communications offers fiber service in Sioux Falls. Check [FiberFinder](https://fiberfinder.ai) for your specific address.
**Does Xfinity have data caps in Sioux Falls?** Yes -- 1.2 TB/month. SDN fiber typically has no data caps.
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Check fiber availability at your Sioux Falls address at [fiberfinder.ai](https://fiberfinder.ai).