The Mississippi Gulf Coast runs roughly 80 miles along the coast of the Gulf of Mexico — from Waveland and Bay St. Louis in Hancock County, through Gulfport and Biloxi in Harrison County, to Pascagoula in Jackson County. This compact stretch of coast packs an enormous amount of economic activity: casino gaming, military installations (Keesler AFB in Biloxi), shipbuilding, seafood processing, and tourism. The health insurance landscape here reflects the diversity of those industries.
Mississippi is historically one of the states with the highest uninsured rates in the country. The Gulf Coast counties are somewhat better-insured than the state average — the military population at Keesler is covered by TRICARE, and large casino and shipbuilding employers often offer group plans — but significant gaps remain, particularly for service workers, seasonal employees, and small business owners.
Mississippi uses the federal HealthCare.gov marketplace. Harrison County (Biloxi/Gulfport) is the largest and most competitive marketplace county on the Mississippi coast, typically offering 3–4 carriers. Hancock County (Bay St. Louis/Waveland) and Jackson County (Pascagoula) generally have fewer options.
Mississippi's Medicaid situation is genuinely complicated in 2026. Voters approved Initiative 65A in 2023, which instructed the legislature to expand Medicaid coverage. However, the legislative implementation has been partial, delayed, and contested. The coverage for the expansion population that was promised has been slower to materialize than in other expansion states.
The practical guidance for Mississippi Gulf Coast residents: don't assume you qualify for Medicaid based on the ballot initiative results alone. Check the Mississippi Division of Medicaid website or call their helpline for current eligibility information. If you're between 100% and 138% FPL and not yet covered by expansion Medicaid, you may qualify for ACA marketplace subsidies — file at HealthCare.gov.
If your income is below 100% FPL and you're not covered by traditional Mississippi Medicaid (which has very narrow eligibility), the situation is difficult. Community health centers in Biloxi, Gulfport, and Bay St. Louis provide sliding-scale primary care regardless of insurance status. The Mississippi Center for Health Policy maintains navigator resources to help coastal residents identify every available option.
Keesler Air Force Base in Biloxi is one of the major Air Force training installations in the country. The 81st Medical Group at Keesler serves a large military population through TRICARE. Active duty members at Keesler and their families are covered by TRICARE Prime through the 81st MDG. Retired military and veterans in the Biloxi area may use TRICARE Select and the Biloxi VA Medical Center.
The military population at Keesler also creates a secondary market: military spouses who work civilian jobs and need civilian coverage, veterans transitioning out who need ACA plans, and retirees who have TRICARE but want supplemental coverage for dental and vision.
The casino industry is one of Mississippi's largest employers, concentrated heavily on the Gulf Coast. Large casino-resort operators — Hard Rock Biloxi, Beau Rivage, IP Casino, Golden Nugget Biloxi — offer group health benefits to full-time employees. But the casino economy also generates enormous numbers of part-time, seasonal, and contractor positions without benefits.
Casino employees who work part-time or seasonal schedules without employer benefits are a significant ACA marketplace population in Harrison County. If you work in the casino or hospitality industry on the Mississippi coast without employer coverage, the ACA marketplace is your primary path to affordable insurance.