Short answer: private health insurance in South Dakota comes in two forms. The marketplace plans are themselves sold by private companies: three insurers file plans on HealthCare.gov for 2026, led by Avera Health Plans in all 66 counties. They come with tax credits and no health questions. Medically underwritten plans are the other form: they ask about your health, can decline you and get no credit, but a healthy buyer can often pay less, and one can start in any month. (Reviewed by Daniel Griffin, licensed independent advisor, NPN #22052447.)
Who Sells Marketplace Plans in South Dakota
| Insurer (2026) | Counties where it sells |
|---|---|
| Avera Health Plans | All 66 |
| Sanford Health Plan | All 66 |
| Wellmark of South Dakota | 42 of 66 |
From the CMS Plan Year 2026 landscape file. Every South Dakota county has at least two marketplace insurers in 2026. Insurers filing under more than one company name are counted once here.
What South Dakota Plans Cost Before a Tax Credit
The average benchmark Silver premium for a 40-year-old in South Dakota was $655 a month in 2026, before any tax credit (KFF). County by county, that benchmark ran from $514 in Lincoln County and 2 others to $774 in Bennett County and 15 others. The cheapest Silver plan anywhere in South Dakota cost $420 at age 27, $512 at 40 and $1,087 at 60; the priciest Silver plan for a 40-year-old cost $882.
Who Should Look Beyond the South Dakota Marketplace
For 2027 coverage the tax credit stops at $63,840 for one person and $132,000 for a family of four. At South Dakota’s 2026 benchmark, a single 40-year-old just over that line pays $7,860 a year, about 12% of income, before the 2027 increase. That is where a healthy household can save with a medically underwritten plan, which is priced on health, not income. It is not ACA coverage: it can decline you and usually excludes pre-existing conditions and maternity care. Leaving a job? See COBRA alternatives.
Networks: What to Check in South Dakota
PPO plans are sold on South Dakota’s marketplace in all 66 counties for 2026, alongside EPO and HMO plans. A PPO pays something out of network, usually at a higher cost to you; the others generally do not.
Healthy, in South Dakota, and paying full price?
Send your ZIP code. A licensed agent checks your tax credit first, then compares your best marketplace plan with the private options for your county.
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2027 in South Dakota
South Dakota’s approved 2027 rates are an average 10.1% higher than 2026 (enrollment-weighted, reported Sep 24, 2026). No insurer has announced it is leaving South Dakota’s marketplace for 2027. Open Enrollment on HealthCare.gov runs November 1, 2026 to January 15, 2027; choose by December 15 for coverage that starts January 1. Medically underwritten plans are not tied to that calendar. health insurance in South Dakota · South Dakota plans compared.
Checking an Agent or a Plan in South Dakota
The South Dakota Division of Insurance licenses agents and insurers in South Dakota: look up anyone selling you a plan, and get the insurer’s name and the list of what is not covered before you pay.
Common Questions
What is private health insurance in South Dakota?
Two things. 3 private insurers sell South Dakota marketplace plans on HealthCare.gov for 2026, with tax credits and no health questions; Avera Health Plans sells in every county. Medically underwritten plans ask health questions, can decline you, get no tax credit and can start in any month.
Who should buy a medically underwritten plan in South Dakota?
A healthy household that gets little or no tax credit: for 2027 coverage there is none above $63,840 for one person or $132,000 for a family of four. Anyone with a real health history, or planning a pregnancy, is usually better protected on the marketplace.
Are there PPO plans on the South Dakota marketplace?
Yes. PPO plans are sold in all 66 South Dakota counties for 2026.
Which insurers are leaving South Dakota’s marketplace for 2027?
No insurer has announced it is leaving South Dakota’s marketplace for 2027.
Sources
- KFF benchmark premiums, South Dakota, 2026.
- CMS plan landscape file, South Dakota, 2026.
- South Dakota 2027 rates and exits (Plans By State, from regulators and ACASignups.net).
- HealthCare.gov: tax credit income limits.
- South Dakota Division of Insurance.
Full-price filed rates before tax credits, not quotes. Underwritten plans are not sold in every state and acceptance depends on health history.