15,076
2026 Marketplace plan selections reported by CMS.
Louisiana Marketplace intelligence
2027 ACA Marketplace in St. Tammany Parish
Use verified 2026 CMS parish evidence as a local benchmark while comparing 2027 Marketplace coverage. Historical averages are context, not a personal quote or current plan list.
88.1%
of selections received advance premium tax credits (APTC).
$721 → $194
Average monthly premium and average after APTC among the CMS parish measures.
Local premium benchmark
How the CMS averages compare
These parish averages describe 2026 Marketplace selections; they are not a personal quote.
Average premium$721
Average after APTC$194
$527 lower on average among the reported measures (73% difference).
What this means when comparing coverage
CMS reports 13,277 APTC recipients in the parish, with average APTC of $599. These are parish-level historical Marketplace measures, not a quote or guarantee of your eligibility, premium, savings, plan availability, or provider network.
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Local evidence
What stands out in St. Tammany Parish's 2026 ACA Marketplace data?
CMS reports 15,076 plan selections in St. Tammany Parish. That ranks #5 of 64 Louisiana parishes in this CoveragePath CMS dataset by Marketplace selections. This is enrollment context, not an estimate of how many parish residents are eligible.
88.1% of reported selections received APTC. The average premium was $721 and the average after APTC was $194 — a $527 difference in these parish-level CMS averages. These averages are not a personal quote or subsidy estimate.
For separate population context, the 2024 ACS uninsured estimate is 6.8%. ACS population insurance statistics and ACA Marketplace eligibility are different measures.
Local marketplace facts
What is available in St. Tammany Parish?
- Plan selections by age
- Under 35: 34.2% · 35-54: 40.2% · 55-64: 24.6% · 65+: 1.0% Source: CMS 2026 Open Enrollment Period County-Level PUF (sha256 2857e5932d4d)
- Consumers eligible for cost-sharing reductions
- 5,456 of 15,076 (36.2%) Source: CMS 2026 Open Enrollment Period County-Level PUF (sha256 2857e5932d4d)
- New, returning and auto-renewed consumers
- 11.1% new to the Marketplace, 88.9% returning; 6,899 (45.8% of all) were automatically re-enrolled Source: CMS 2026 Open Enrollment Period County-Level PUF (sha256 2857e5932d4d)
- Plan selections by metal level
- Bronze 53.2% · Silver 38.7% · Gold 8.1% · Platinum, catastrophic and other 0.0% (of 15,076 selections) Source: CMS 2026 Open Enrollment Period County-Level PUF (sha256 2857e5932d4d)
How St. Tammany Parish compares with Louisiana
St. Tammany Parish accounts for about 5.1% of the 2026 Marketplace selections in this Louisiana parish dataset. These comparisons use the same sourced parish inventory shown on this page.
The parish average premium is -$38 versus the selection-weighted Louisiana parish benchmark of $759.
The parish average after APTC is +$50 versus the selection-weighted benchmark of $144.
The ACS parish uninsured estimate is -1.0 points versus the population-weighted Louisiana parish benchmark of 7.8%.
Method: premium benchmarks are weighted by Marketplace plan selections; the ACS uninsured benchmark is weighted by the ACS parish population universe. Suppressed CMS values are not estimated.
Population coverage context
Health coverage context in St. Tammany Parish
6.8%
ACS estimate for the uninsured share of the Census S2701 population universe.
268,973
People in the ACS health-insurance coverage population universe for this parish.
The U.S. Census Bureau's 2024 ACS 5-Year estimate describes population health-insurance coverage in St. Tammany Parish. It is useful local context, but it does not measure ACA Marketplace eligibility, enrollment, premiums, subsidies, or plan availability. The Marketplace figures above come separately from CMS.
Check the factors that affect ACA eligibility · Compare Louisiana Marketplace context
Population context source: U.S. Census Bureau, 2020-2024 ACS 5-Year Subject Table S2701 · Parish FIPS 22103
Source: Centers for Medicare & Medicaid Services, 2026 OEP County-Level Public Use File · Verified September 18, 2026 · Parish FIPS 22103