Nassau County is one of Florida's fastest-growing counties — a suburban collar county north of Jacksonville that has seen dramatic population growth as families and retirees have migrated from South Florida, the Northeast, and beyond. Fernandina Beach on Amelia Island offers an appealing blend of historic downtown charm and coastal lifestyle. Yulee, just west of the Nassau River, has become a major distribution and logistics hub. The Georgia state border runs along the county's northern edge, creating a unique situation where some residents live in Florida but work across the state line.
Nassau County's insurance landscape is shaped by its suburban Jacksonville character. Residents access the same Jacksonville metro ACA rating area as Duval County, which means more carrier competition and more plan choices than rural North Florida counties. For residents who don't receive employer coverage — including the self-employed, part-time workers, and those between jobs — the ACA marketplace at HealthCare.gov provides access to a competitive set of plans.
As part of the Jacksonville metro ACA market, Nassau County residents typically have access to 4–6 carriers — a meaningfully more competitive market than rural North Florida counties.
Baptist Health's Baptist Nassau facility in Fernandina Beach serves the local community. For specialist and advanced care, Nassau County residents typically access the full Jacksonville hospital system — UF Health Jacksonville, Mayo Clinic Florida, Baptist Medical Center Main, and Ascension St. Vincent's Medical Center. Verify that your chosen plan covers both local Nassau County facilities and Jacksonville-area hospitals as in-network providers.
Health insurance in Nassau County
Nassau County's rapid growth has created a population mix that makes health insurance needs highly varied. Many residents are Jacksonville commuters who receive employer-sponsored coverage through Duval County employers — logistics companies, healthcare systems, the military, and financial services firms. For these residents, the ACA marketplace may not be the primary consideration.
However, Nassau County also has a significant population of small business owners, self-employed contractors, part-time workers, and retirees under 65 who must find individual coverage. The county's construction and logistics growth also brings workers who may not qualify for employer coverage or who have gaps between jobs. For all of these populations, the ACA marketplace provides the primary path to coverage.
| Annual Income (Single Adult) | % of FPL (2026) | Subsidy Status | Est. Monthly Cost (Silver, age 40) |
|---|---|---|---|
| Below $15,960 | Below 100% | Florida Medicaid gap — no ACA subsidy | Full premium (~$430) |
| $15,960 – $23,940 | 100–150% | Maximum subsidy + Enhanced Silver CSRs | $0 – $30/month |
| $23,941 – $31,920 | 150–200% | Strong subsidy + Enhanced Silver CSRs | $30 – $75/month |
| $31,921 – $47,880 | 200–300% | Meaningful subsidy | $75 – $175/month |
| $47,881 – $63,840 | 300–400% | Moderate subsidy | $175 – $295/month |
| Above $63,840 | 400%+ | May qualify if premium > 8.5% of income | Varies |
Estimates for a single 40-year-old on a benchmark Silver plan in the Jacksonville metro rating area. Not guaranteed quotes — verify at HealthCare.gov.
Nassau County borders Duval County (Jacksonville) to the south and Clay County to the southwest. See our guides for Duval County health insurance and Clay County health insurance for comparison of Jacksonville metro ACA options.
Ready to compare Nassau County health insurance plans? A licensed Florida agent can review every carrier at your zip code — subsidy calculation, network verification, and enrollment — at no cost to you.
Get a Free QuoteSee our Florida ACA Guide, Florida ACA Plans overview, and health insurance by county. Browse plans at HealthCare.gov.