Sioux Falls runs as a two-carrier market with a regional wildcard. Midco owns the cable footprint, CenturyLink has selective fiber, and SDN Communications quietly serves a lot of the commercial fiber demand most buyers don't know to ask about. SDN is a cooperative owned by South Dakota's independent telephone companies, which means it behaves differently than a national carrier on price and term. The metro is also unusual for its size because Foundation Park pulled real fiber investment to the northwest edge. That means a logistics tenant out there can sometimes get better pricing than a downtown office, which inverts the normal pattern.
Sioux Falls is mostly a Midco and CenturyLink market. Midco Business has the dominant cable footprint across the metro. CenturyLink (Lumen) has fiber in parts of the city. SDN Communications serves commercial buildings with fiber. T-Mobile fixed wireless is widely available.
The pricing problem in Sioux Falls is the assumption that Midco is the only real choice. They often are the right answer for cable, but rarely the cheapest fiber option without a competing quote.
Sioux Falls' commercial heart
Sioux Falls' commercial demand sits in three places. Downtown Sioux Falls holds the legal, financial, and government corridor that anchors the city's daytime workforce and the bulk of its Class A office stock. The Riverline District, the redeveloping commercial zone the mayor has marketed as a near-downtown growth area, has filled in with creative-office, hospitality, and small business tenancy over the past several years. Foundation Park, the master-planned business and industrial park on the city's northwest edge, anchors a deep concentration of logistics, light-manufacturing, and back-office tenancy outside the urban core. Sanford Health and Avera Health, the two regional health systems that Sioux Falls Development Foundation lists among the city's largest employers, are two of the largest commercial accounts in the metro and drive heavy enterprise telecom demand.
On May 5, 2025, Midco announced that its multi-gig symmetrical speed upgrades were reaching Sioux Falls homes and businesses as part of its Fiber Forward investment, lifting the incumbent's headline-speed ceiling for commercial accounts in the metro. One pricing wrinkle: Downtown Sioux Falls property owners fund a self-imposed Business Improvement District assessment that pays for downtown marketing, maintenance, and economic development services, often passed through in commercial leases.
What you should be paying
These are dedicated internet ranges from current carrier wholesale data, marked up to typical retail.
Sioux Falls dedicated internet, typical retail (mid 50%)
Monthly recurring charge, dedicated internet access (DIA). Numbers are derived from current carrier wholesale quotes. Shown as a metro-tier band where city-level data is thin.
| Speed | Typical retail (mid 50%) | Sample size |
|---|---|---|
| 100 Mbps | $630 – $1,060/mo | n = 6 |
| 500 Mbps | $955 – $1,660/mo | n = 6 |
| 1 Gbps | $1,195 – $2,000/mo | n = 7 |
| 10 Gbps | $1,560 – $6,250/mo | n = 6 |
If your bill sits above the high end of the band, you are likely overpaying.
Analyze My Bill FreeFor Midco Business coax at 600 Mbps, the fair price is $150 to $230 a month for a single office. For SDN Business Fiber at 1 Gbps, expect $130 to $200 a month.
Carriers worth quoting in Sioux Falls
Five carriers cover most addresses in the metro.
- Midco Business. Coax everywhere, fiber in select buildings.
- CenturyLink (Lumen) Business. Fiber where they have rebuilt, copper elsewhere.
- SDN Communications. Regional fiber carrier strong in commercial buildings.
- T-Mobile Business Internet. $85 a month for 200 to 300 Mbps. Useful benchmark.
- Verizon 5G Business Internet. $99 a month at 400 Mbps.
If you have not had three of these on a quote sheet, you have not run a real comparison.
What to do this week
- Pull your most recent invoice. Find the contract end date and the side fees.
- Get one quote from SDN if you are in a commercial building.
- Compare your base rate to the bands above. If you are 20 percent above the high end, the retention call is worth making.
See where your Sioux Falls bill sits against current rates
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Related reading
Carriers worth a quote here
- Midco Business
The dominant cable operator in Sioux Falls and the default first quote for most SMBs. Their May 2025 Fiber Forward upgrade pushed multi-gig symmetrical speeds into the metro, but they rarely lead with their best price unless you have a competing quote in hand.
- Lumen Business
CenturyLink fiber covers parts of downtown and select commercial corridors, but coverage is patchy block to block. Lumen is currently hungry for business and will negotiate harder than usual, especially on 1G and 10G DIA at end of quarter.
- T-Mobile Business
Fixed wireless coverage is broad across the metro and works as a credible secondary or failover circuit for small offices. Pricing is flat and predictable, but it's not a primary for anything latency-sensitive or high-throughput.
- Crown Castle Fiber
On-net in select downtown and medical district buildings, mostly serving larger commercial tenants. Worth a quote if you're in a Class A building or near the Sanford or Avera campuses, since their pricing is competitive when the building is already lit.
What internet costs in Sioux Falls, South Dakota right now
Sioux Falls, South Dakota market notes
Common questions about business internet in Sioux Falls, South Dakota
Is Midco the cheapest business internet in Sioux Falls?
Not always. Midco is usually the cheapest cable option, but for fiber, CenturyLink and SDN Communications regularly come in lower on DIA when the building is on-net. The mistake is treating Midco as the only quote. Get two more before you sign, even if you end up back with Midco at a better rate.
What should a 1Gbps dedicated internet circuit cost in Sioux Falls?
On-net buildings in Sioux Falls should price between $1,200 and $1,700 per month on a 36-month term. Off-net or single-tenant buildings can push past $2,000 because install costs get rolled into the MRC. If you're paying over $2,000 on-net, you're above market and have room to renegotiate.
Does SDN Communications serve my building?
SDN serves a lot of commercial buildings in Sioux Falls, but their footprint isn't published the way national carriers' is. The only reliable way to know is to call them with your address. They're a cooperative, so the sales process is slower than a national carrier, but pricing is often competitive on multi-year terms.
Is T-Mobile fixed wireless good enough for a Sioux Falls business?
For a small office with light usage, it's fine. For a primary circuit at a healthcare practice, a law firm, or anything running VoIP and cloud apps all day, it's not. Fixed wireless has no real SLA and throughput varies with weather and tower load. It's a strong failover, not a primary.
When is the best time to renegotiate a Sioux Falls internet contract?
90 days before your contract end date. That's when you still have time to get competing quotes, file portability requests, and threaten to switch credibly. Wait until the last 30 days and you lose negotiating ground. Lumen and Midco both flex hardest at end of quarter, so time your decision for the last two weeks of March, June, September, or December.
Why does my Foundation Park office get better pricing than downtown?
Foundation Park was built with conduit and fiber in mind, so most buildings out there are on-net to multiple carriers from day one. Downtown has older building stock with mixed fiber access, which means more off-net builds and higher install costs. Newer purpose-built commercial space almost always prices better than legacy downtown buildings.