South Dakota Health Insurance Guide

Health Insurance Overview in South Dakota

South Dakota expanded Medicaid in 2023 following voter approval of Amendment D in 2022 — one of the most recent states to expand. South Dakota uses the federal HealthCare.gov marketplace. The state's small population and rural character mean marketplace options are limited in many areas.

Average Health Insurance Costs in South Dakota

Health insurance premiums in South Dakota vary significantly based on age, plan type (Bronze, Silver, Gold, Platinum), insurer, and income-based subsidies. The figures below represent estimated 2026 benchmark premiums before ACA subsidies for a 40-year-old individual and family of four.

Coverage Type	Monthly Premium	Annual Premium
Individual (benchmark Silver)	$448/mo	$5376/yr
Family of Four (benchmark Silver)	$1,282/mo	$15384/yr
Avg. Annual Deductible	$4,800

Premiums shown are before ACA subsidies. Most marketplace enrollees receive premium tax credits that significantly reduce these costs. Use our Health Insurance Calculator to estimate your net premium after subsidies.

Marketplace Enrollment in South Dakota

South Dakota residents can enroll in individual and family health insurance plans through HealthCare.gov (Federal). Open enrollment runs November 1 – January 15 (federal marketplace). Outside of open enrollment, a qualifying life event (job loss, marriage, birth of a child, move to a new state) triggers a Special Enrollment Period during which you can enroll or change plans.

Average Premiums by City in South Dakota

Health insurance premiums vary by location within South Dakota, reflecting local healthcare costs, provider availability, and insurer competition. The following estimated monthly individual premiums are based on a benchmark Silver plan for a 40-year-old non-smoker.

City	Est. Monthly Premium (Silver, age 40)
Sioux Falls	$458/mo
Rapid City	$448/mo
Aberdeen	$438/mo
Brookings	$435/mo
Watertown	$432/mo
Mitchell	$428/mo

Medicaid in South Dakota

South Dakota Medicaid expanded in July 2023 following voter approval in 2022. Adults with incomes up to 138% of the federal poverty level are eligible.

Children's Health Insurance (CHIP) in South Dakota

Children's Health Insurance Program (CHIP) covers children in families with incomes up to 200% of the federal poverty level.

What Makes South Dakota Unique

South Dakota voters approved Medicaid expansion in November 2022 with 56% of the vote, over the objections of the governor and most of the legislature. The state implemented expansion in July 2023, covering approximately 42,000 previously uninsured South Dakotans. South Dakota's tribal communities — particularly on the Pine Ridge and Rosebud reservations — see significant benefits from the expansion.

ACA Subsidies: What South Dakota Residents Should Know

Premium tax credits (subsidies) are available for South Dakota residents who purchase coverage through the marketplace and have incomes between 100% and 400% of the federal poverty level (or higher in states with additional state subsidies). The subsidy amount is based on the cost of the benchmark Silver plan in your area and your income. For 2026, the enhanced subsidies first enacted in the American Rescue Plan have been extended, providing more substantial assistance across a broader income range than before.

Cost-sharing reductions (CSRs) provide additional savings on deductibles and copays for those who enroll in Silver plans with incomes between 100-250% of the federal poverty level. Silver plans with CSRs often provide Gold or Platinum-level value at Silver premiums, making them the best value for eligible enrollees.

Tips for Choosing Health Insurance in South Dakota

South Dakota residents who were previously uninsured should check eligibility for Medicaid following the 2023 expansion. Rural South Dakota residents may have very limited marketplace options. ACA subsidies are available for incomes 100-400% of the federal poverty level. Tribal members may have additional coverage options through Indian Health Service.

• Enroll during open enrollment (November 1 – January 15 (federal marketplace)) — missing the deadline means waiting until the next open enrollment unless you have a qualifying life event.
• Check both Medicaid eligibility and marketplace subsidy eligibility — your income determines which program you qualify for.
• Don't just compare premiums — also compare deductibles, out-of-pocket maximums, and whether your doctors are in-network.
• Silver plans with cost-sharing reductions (for incomes 100-250% FPL) typically offer the best overall value despite higher premiums than Bronze plans.
• Use our Health Insurance Calculator to estimate your total annual cost (premium + expected out-of-pocket) for different plan options.

The information on this page is provided for general informational purposes only and reflects estimated industry averages and program eligibility rules as of 2026. Health insurance premiums, Medicaid eligibility thresholds, marketplace options, and program rules change annually. Always verify current eligibility and enrollment options at the official HealthCare.gov (Federal) or by contacting a certified navigator or broker. Premium figures shown are approximations before subsidies — actual net premiums depend on individual income, household size, and plan selection.