# Atlas Commons research objects — ACA marketplace coverage for South Dakota (2026) — context brief

South Dakota's ACA marketplace coverage from the CMS ACA Plan Attributes PUF, with each figure's epistemic status labeled: every plan count — medical plans, standalone dental plans, and breakdowns by metal level, plan type, HSA-eligibility, and referral requirement — is a measured census of plans offered (counts of rows in the CMS file, all labeled RECORDED); the sticker premium landscape by metal tier (40yo, pre-subsidy) is a recorded set of published CMS Rate PUF rates, with the subsidy note labeled CONTEXT; the boundary note is context (labeled CONTEXT) — these count plans offered and their sticker price, not enrollment, the insured rate, or net cost after subsidies. Sources: CMS ACA Plan Attributes PUF, CMS Marketplace Rate PUF. CC0.

Claims (warrant · source), each re-fetchable to verify:

- **326 ACA medical marketplace plans are offered in South Dakota for plan year 2026** — RECORDED · CMS ACA Plan Attributes PUF (2026 plan year) (https://www.cms.gov/marketplace/resources/data/public-use-files)
- **Medical plan counts by CMS metal level in South Dakota (2026): Silver 154, Expanded Bronze 84, Gold 80, Catastrophic 8** — RECORDED · CMS ACA Plan Attributes PUF (2026 plan year) (https://www.cms.gov/marketplace/resources/data/public-use-files)
- **Medical plan counts by CMS plan type in South Dakota (2026): PPO 159, HMO 99, EPO 68** — RECORDED · CMS ACA Plan Attributes PUF (2026 plan year) (https://www.cms.gov/marketplace/resources/data/public-use-files)
- **92 of 326 medical plans in South Dakota are HSA-eligible (2026)** — RECORDED · CMS ACA Plan Attributes PUF (2026 plan year) (https://www.cms.gov/marketplace/resources/data/public-use-files)
- **326 of 326 medical plans in South Dakota require no specialist referral (2026)** — RECORDED · CMS ACA Plan Attributes PUF (2026 plan year) (https://www.cms.gov/marketplace/resources/data/public-use-files)
- **8 standalone dental plans are offered in South Dakota for plan year 2026** — RECORDED · CMS ACA Plan Attributes PUF (2026 plan year) (https://www.cms.gov/marketplace/resources/data/public-use-files)
- **STICKER ACA premiums in South Dakota for a 40-year-old (before tax credits): Silver median $703/mo** — DERIVED · CMS Marketplace Rate Public Use File (atlas-aggregated per tier) (https://www.cms.gov/marketplace/resources/data/public-use-files)
- **What the South Dakota premiums mean — sticker, not your price** — INTERPRETATION · Coverage Atlas framing (over the CMS Rate PUF figures above) (https://coverage-atlas.ryanjhunter.workers.dev/)
- **What these coverage figures are — and are NOT — for South Dakota (the epistemic boundary)** — INTERPRETATION · Coverage Atlas framing (over the CMS facts above) (https://coverage-atlas.ryanjhunter.workers.dev/)

Do not take these on trust — re-fetch each named source. Full structured object: `https://coverage-atlas.ryanjhunter.workers.dev/coverage/states/sd.jsonld` · anatomy of the research object: see /commons/the-research-object

**South Dakota — every coverage indicator (typed)** (11): Medical plans offered — 326 — RECORDED — CMS ACA Plan Attributes PUF (2026); Medical issuers — 3 — RECORDED — CMS ACA Plan Attributes PUF (2026); HSA-eligible medical plans — 92 — RECORDED — CMS ACA Plan Attributes PUF (2026)…
**South Dakota — medical plans by CMS metal level (RECORDED)** (4): Silver — 154; Expanded Bronze — 84; Gold — 80…
**South Dakota — medical plans by CMS plan type (RECORDED)** (3): PPO — 159; HMO — 99; EPO — 68…
**South Dakota — medical plans by market coverage (RECORDED)** (1): Individual — 334…
**South Dakota — sticker ACA premiums by metal tier (40yo, pre-subsidy, DERIVED)** (4): Catastrophic — 10 — 394 — 380 — 408 — 291 — 469; Bronze — 48 — 539 — 447 — 579 — 406 — 718; Silver — 52 — 703 — 560 — 750 — 512 — 882…
**South Dakota — issuers present on the marketplace (RECORDED)** (4): Avera Health Plans; BEST Life; Sanford Health Plan…