Health insurance in Greenville County, South Carolina
3 insurers sell 48 marketplace plans here, and 11.5% 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
3 insurers sell marketplace plans in Greenville County, offering 48 plans between them, roughly 16 each. It gained 1 since the previous plan year, up from 2.
How many people here have no coverage
11.5% of Greenville County's 463,426 under-65 residents have no health coverage — 53,063 people. That is close to the South Carolina rate of 11.2%, and puts Greenville County in the middle half of the 1,817 counties on this site (773rd).
Some of those 53,063 are in the South Carolina coverage gap: under $15,960 a year, too little for a subsidy and no expanded Medicaid to fall back on.
How much the marketplace is used
60,999 Greenville County residents selected a marketplace plan for 2026: 132 per thousand under-65 residents, 448th of 1,817. That is above the 78 per thousand typical of published counties. 8,649 of them — 14% — were new rather than renewing.
Greenville County against South Carolina
Greenville County is the largest of the 12 South Carolina counties we publish, by under-65 population. Its uninsured rate tracks the state almost exactly and its 3 insurers sit between the state's 2 and 5. Marketplace use is close to the South Carolina rate.
| Greenville County | South Carolina | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 11.5% | 11.2% | 9.9% |
| Insurers selling | 3 | 2–5 | 4 |
| Plans offered | 48 | — | 57 |
| Selections per 1,000 | 132 | 138 | 78 |
| New rather than renewing | 14% | 14% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Charleston County | 344,054 | 9.5% | 4 | 60 |
| Spartanburg County | 300,077 | 12.4% | 4 | 44 |
| Horry County | 291,194 | 14.1% | 3 | 48 |
| Polk County (Iowa) | 436,678 | 7.0% | 4 | 58 |
Charleston County has 4 insurers against this county's 3 — a reminder that the county line, not the state line, is what decides your options.
Other South Carolina counties · Where the subsidy stops · Enrollment dates