Health insurance in Knox County, Tennessee
4 insurers sell 50 marketplace plans here, and 9.8% 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 Knox County, offering 50 plans between them, roughly 12 each. It gained 2 since the previous plan year, up from 2.
How many people here have no coverage
9.8% of Knox County's 413,016 under-65 residents have no health coverage — 40,681 people. That is below the Tennessee rate of 11.3%, and puts Knox County in the middle half of the 1,817 counties on this site (1099th).
Some of those 40,681 are in the Tennessee 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
38,099 Knox County residents selected a marketplace plan for 2026: 92 per thousand under-65 residents, 877th of 1,817. That is above the 78 per thousand typical of published counties. 6,207 of them — 16% — were new rather than renewing.
Knox County against Tennessee
Knox County is the 3rd largest of the 11 Tennessee counties we publish. Its uninsured rate runs 1.5 points lower than Tennessee overall and its 4 insurers sit between the state's 3 and 5. Marketplace use is close to the Tennessee rate.
| Knox County | Tennessee | Published median | |
|---|---|---|---|
| Uninsured, under 65 | 9.8% | 11.3% | 9.9% |
| Insurers selling | 4 | 3–5 | 4 |
| Plans offered | 50 | — | 57 |
| Selections per 1,000 | 92 | 98 | 78 |
| New rather than renewing | 16% | 16% | 15% |
Counties of a similar size nearby
| County | Under 65 | Uninsured | Insurers | Plans |
|---|---|---|---|---|
| Rutherford County | 328,845 | 11.0% | 5 | 65 |
| Hamilton County | 306,635 | 11.5% | 5 | 59 |
| Williamson County | 230,574 | 6.5% | 5 | 65 |
| Davidson County | 609,116 | 13.3% | 5 | 65 |
| Shelby County | 732,633 | 12.6% | 5 | 65 |
Rutherford County has 5 insurers against this county's 4 — a reminder that the county line, not the state line, is what decides your options.
Other Tennessee counties · Where the subsidy stops · Enrollment dates