County almanac · Florida
Nassau County Medicare data (2026)
Aggregate Medicare facts for Nassau County, Florida — from CMS, KFF, and the U.S. Census. Free to cite and reuse. No plan names, no rankings.
Nassau County — quick facts
In Nassau County, Florida, about 26,000 people are enrolled in Medicare, with roughly 36% in Medicare Advantage and the remaining 64% in Original Medicare. About 25% of the county's 104,400 residents are age 65 or older, and around 20 Medicare Advantage plans are available there. These are aggregate CMS, KFF, and U.S. Census figures — not a plan or carrier recommendation.
Updated 2026-06-06 · Source: CMS Medicare Monthly Enrollment + MA/Part D landscape (May 2026), KFF, U.S. Census ACS 5-Year
26,000
Medicare beneficiaries
36%
in Medicare Advantage
25%
residents age 65+
20
MA plans available
Why the plan count can change year to year
The number of Medicare Advantage plans available in a county isn't fixed — carriers enter and exit markets each year as Medicare's payment and Star-Ratings rules change. For 2026 the national Medicare Advantage plan count fell about 9%, and roughly 2.6 million members nationwide had their plan terminated and had to choose again (CMS, 2025). If your plan is non-renewed, you get a Special Enrollment Period — and your doctors and prescriptions may not carry over, so they're worth re-checking.
We track the Texas + Florida picture in our 2026 carrier-exit brief. Which specific plans serve Nassau County — and whether they fit you — is something we go through one-on-one, free.
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Coverage we help with in Nassau County
Want help making sense of Nassau County's options?
Plan-specific questions (which plans, which doctors, which drugs) are best answered one-on-one — free, and with no obligation.
Common questions
How many people have Medicare in Nassau County?
About 26,000 Floridians in Nassau County are enrolled in Medicare per the latest CMS Medicare Monthly Enrollment data. Around 36% are in Medicare Advantage plans; the rest are in Original Medicare, with or without a Medigap policy.
How many Medicare Advantage plans are available in Nassau County?
As of the May 2026 CMS landscape data, about 20 Medicare Advantage plans are available to Nassau County residents. That is a count of available plans only — it is not a list of plans we sell and not a recommendation. Each plan has its own network and drug list, which is why a free review confirms the real fit.
What share of Nassau County is age 65 or older?
About 25% of Nassau County's roughly 104,400 residents are age 65 or older, per U.S. Census Bureau ACS 5-Year estimates.
Where can I get free, unbiased Medicare help in Nassau County?
Florida SHINE -- Nassau County (1-800-963-5337) offers free, unbiased Medicare counseling. You can also contact Medicare.gov or call 1-800-MEDICARE for all of your options. Giron Agency offers a free, no-obligation review as well.
Sources: CMS Medicare Monthly Enrollment; CMS Medicare Advantage / Part D landscape (May 2026); KFF Medicare Advantage analysis; U.S. Census Bureau ACS 5-Year. Figures are aggregate and rounded. Giron Agency LLC is a licensed insurance agency; this is reference data, not a recommendation of any plan or carrier. We do not offer every plan available in your area. Not connected with or endorsed by the U.S. government or the federal Medicare program.