Health insurance in St. Tammany Parish, Louisiana
4 insurers sell 51 marketplace plans here, and 8.2% of under-65 residents have no coverage at all.
Source: CMS Marketplace Open Enrollment Public Use Files and US Census Small Area Health Insurance Estimates, 2026 release.
Who sells here, and how much choice that gives
4 insurers sell marketplace plans in St. Tammany Parish, offering 51 plans between them, roughly 13 each. It gained 1 since the previous plan year, up from 3.
How many people here have no coverage
8.2% of St. Tammany Parish's 222,703 under-65 residents have no health coverage — 18,156 people. That is close to the Louisiana rate of 9.2%, and puts St. Tammany Parish in the bottom quarter of the 1,817 counties on this site (1371st).
How much the marketplace is used
15,076 St. Tammany Parish residents selected a marketplace plan for 2026: 68 per thousand under-65 residents, 1284th of 1,817. That is close to the 78 per thousand typical of published counties. 1,679 of them — 11% — were new rather than renewing.
St. Tammany Parish against Louisiana
St. Tammany Parish is the 4th largest of the 12 Louisiana counties we publish. Its uninsured rate runs 1.0 points lower than Louisiana overall and its 4 insurers sit between the state's 2 and 5. Marketplace use is close to the Louisiana rate.
| St. Tammany Parish | Louisiana | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 8.2% | 9.2% | 9.9% |
| Insurers selling | 4 | 2–5 | 4 |
| Plans offered | 51 | — | 57 |
| Selections per 1,000 | 68 | 82 | 78 |
| New rather than renewing | 11% | 11% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Lafayette Parish | 209,784 | 8.8% | 3 | 32 |
| Caddo Parish | 173,151 | 8.8% | 5 | 63 |
| Orleans Parish | 274,370 | 9.0% | 3 | 38 |
| Calcasieu Parish | 167,995 | 8.7% | 4 | 44 |
Caddo Parish has 5 insurers against this county's 4 — a reminder that the county line, not the state line, is what decides your options.
All Louisiana counties · How the credit works · Enrollment dates