Key facts
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Population — .5 million — Tampa Bay's largest county
County seat: Tampa — Florida's third-largest city
ACA carriers: Florida Blue, Ambetter, Molina, UnitedHealthcare, Oscar, Cigna
MacDill AFB: headquarters of US Central Command and SOCOM
Port Tampa Bay: largest port in Florida; major maritime employer
Ybor City, Hyde Park, SoHo — diverse economic and demographic mix
Hillsborough County is the population and economic engine of Florida's Gulf Coast. Tampa — the county seat and state's third-largest city — is a major financial center, healthcare hub, military command post, and one of the fastest-growing metros in the United States. The Gulf Coast identity is woven through Tampa's character: Port Tampa Bay, the Hillsborough Bay waterfront, Davis Islands, Bayshore Boulevard, and the Tampa Bay itself define the city's relationship with the water.
MacDill Air Force Base, located on a peninsula in South Tampa, is the headquarters of U.S. Central Command (CENTCOM) and U.S. Special Operations Command (SOCOM) — arguably the two most strategically significant military commands in the United States. The base brings a large active-duty, veteran, and civilian workforce to the county. Active-duty personnel use TRICARE; veterans, civilian contractors, and separated service members may be ACA marketplace eligible.
Six ACA carriers compete in Hillsborough County for 2026, giving Tampa area residents one of the most competitive health insurance markets in Florida. This competition drives meaningful premium differentiation and gives savvy shoppers opportunities to save $100+ per month by comparing carriers carefully.
Hillsborough County has six ACA marketplace carriers in 2026: Florida Blue, Ambetter, Molina, UnitedHealthcare, Oscar, and Cigna. Tampa's large population drives maximum carrier competition. Compare all six at HealthCare.gov using your Tampa, Brandon, or Plant City zip code.
Health insurance in Hillsborough County
The following income thresholds govern 2026 ACA subsidy eligibility (using 2025 FPL). Florida has not expanded Medicaid — adults in Hillsborough County below 100% FPL without dependent children fall into the coverage gap.
| Household Size | 100% FPL | 150% FPL | 200% FPL | 300% FPL | 400% FPL |
|---|---|---|---|---|---|
| 1 person | $15,060 | $22,590 | $30,120 | $45,180 | $60,240 |
| 2 people | $20,440 | $30,660 | $40,880 | $61,320 | $81,760 |
| 3 people | $25,820 | $38,730 | $51,640 | $77,460 | $103,280 |
| 4 people | $31,200 | $46,800 | $62,400 | $93,600 | $124,800 |
Tampa General Hospital, BayCare Health System (St. Joseph's Hospital, St. Joseph's Children's Hospital), AdventHealth Tampa, and HCA Florida (Brandon Regional, Blake Medical) are the major hospital systems serving Hillsborough County. Florida Blue has the most comprehensive multi-system network. UHC covers BayCare and most HCA facilities. Verify your preferred hospital's network participation before enrolling — particularly for Tampa General, where network participation varies by carrier.
Tampa's growing tech corridor (the Channel District, Ybor City, and the Westshore business district) creates a large population of startup workers, freelancers, and small business employees who rely on the ACA marketplace. Remote workers who relocated to Tampa for the Gulf Coast lifestyle and lower cost of living compared to other major metros are heavy marketplace users. The six-carrier competitive market rewards careful shopping.
Hillsborough County's Medicaid coverage gap affects a significant population in East Tampa, Ybor City, and Plant City — areas with lower median incomes where many working adults earn below 100% FPL. These residents are caught between Medicaid (not expanded in Florida) and ACA subsidies (which start at 100% FPL). Community health centers and federally qualified health centers serve as the primary safety net.
Explore ACA coverage across the region: Southern Plan Finder — Florida Gulf Coast Health Insurance — Pinellas County Health Insurance.