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Book a free video or phone consultationThe 8 rating areas
| Region (rating area) | Counties | 2026 sign-ups | vs 2025 | Used an agent/broker | Insurers 2026 |
|---|---|---|---|---|---|
| Tri-Cities & Northeast Tennessee (1) | 8 | 35,303 | -17.3% | 64% | 4 |
| Knoxville & East Tennessee (2) | 16 | 98,017 | -7.4% | 67% | 4 |
| Chattanooga & Southeast Tennessee (3) | 11 | 58,399 | -6.7% | 70% | 5 |
| Nashville & Middle Tennessee (4) | 9 | 174,838 | -9.1% | 70% | 5 |
| Jackson & West Tennessee (5) | 16 | 37,226 | -14.3% | 78% | 5 |
| Memphis & the Mid-South (6) | 5 | 97,258 | -19.7% | 81% | 5 |
| Cookeville & the Upper Cumberland (7) | 14 | 31,864 | -5.4% | 68% | 3 |
| Columbia & South Central Tennessee (8) | 16 | 36,405 | -11.6% | 71% | 4 |
Sources: CMS 2026/2025 OEP county public use files; CMS QHP Landscape PY2026 (insurer counts).
Which region is my county in?
- Tri-Cities & Northeast Tennessee: Carter, Greene, Hancock, Hawkins, Johnson, Sullivan, Unicoi, Washington
- Knoxville & East Tennessee: Anderson, Blount, Campbell, Claiborne, Cocke, Grainger, Hamblen, Jefferson, Knox, Loudon, Monroe, Morgan, Roane, Scott, Sevier, Union
- Chattanooga & Southeast Tennessee: Bledsoe, Bradley, Franklin, Grundy, Hamilton, Marion, McMinn, Meigs, Polk, Rhea, Sequatchie
- Nashville & Middle Tennessee: Cheatham, Davidson, Montgomery, Robertson, Rutherford, Sumner, Trousdale, Williamson, Wilson
- Jackson & West Tennessee: Benton, Carroll, Chester, Crockett, Decatur, Dyer, Gibson, Hardeman, Hardin, Henderson, Henry, Lake, Madison, McNairy, Obion, Weakley
- Memphis & the Mid-South: Fayette, Haywood, Lauderdale, Shelby, Tipton
- Cookeville & the Upper Cumberland: Cannon, Clay, Cumberland, DeKalb, Fentress, Jackson, Macon, Overton, Pickett, Putnam, Smith, Van Buren, Warren, White
- Columbia & South Central Tennessee: Bedford, Coffee, Dickson, Giles, Hickman, Houston, Humphreys, Lawrence, Lewis, Lincoln, Marshall, Maury, Moore, Perry, Stewart, Wayne
Sources
- CMS, 2026 Marketplace Open Enrollment Period Public Use Files (state and county level). https://www.cms.gov/data-research/statistics-trends-and-reports/marketplace-products/2026-marketplace-open-enrollment-period-public-use-files
- CMS, 2025 Marketplace Open Enrollment Period Public Use Files. https://www.cms.gov/data-research/statistics-trends-and-reports/marketplace-products/2025-marketplace-open-enrollment-period-public-use-files
- CMS / HealthCare.gov, QHP Landscape data, individual medical, plan year 2026. https://data.healthcare.gov/datasets?keyword=landscape
Checked October 24, 2026.