Medicare in New Mexico by county

Most people with Medicare

Across New Mexico, 476,941 people had Medicare in July 2026, 51% of them in Medicare Advantage or another Medicare health plan. The counties with the most:

1. Bernalillo County 143,159 with Medicare · 59% in Medicare Advantage · 19 Advantage plans with drug coverage
2. Doña Ana County 49,328 with Medicare · 55% in Medicare Advantage · 9 Advantage plans with drug coverage
3. Santa Fe County 46,920 with Medicare · 42% in Medicare Advantage · 18 Advantage plans with drug coverage
4. Sandoval County 37,734 with Medicare · 56% in Medicare Advantage · 19 Advantage plans with drug coverage
5. San Juan County 25,018 with Medicare · 37% in Medicare Advantage · 5 Advantage plans with drug coverage
6. Valencia County 18,102 with Medicare · 63% in Medicare Advantage · 16 Advantage plans with drug coverage
7. Otero County 14,606 with Medicare · 41% in Medicare Advantage · 2 Advantage plans with drug coverage
8. McKinley County 12,650 with Medicare · 34% in Medicare Advantage · 3 Advantage plans with drug coverage
9. Chaves County 12,348 with Medicare · 46% in Medicare Advantage · 5 Advantage plans with drug coverage
10. Taos County 10,708 with Medicare · 46% in Medicare Advantage · 5 Advantage plans with drug coverage

All 33 counties, A to Z

• Bernalillo County143,159 with Medicare · 59% in Medicare Advantage · 19 Advantage plans with drug coverage
• Catron County1,663 with Medicare · 43% in Medicare Advantage · 5 Advantage plans with drug coverage
• Chaves County12,348 with Medicare · 46% in Medicare Advantage · 5 Advantage plans with drug coverage
• Cibola County5,243 with Medicare · 50% in Medicare Advantage · 6 Advantage plans with drug coverage
• Colfax County3,907 with Medicare · 47% in Medicare Advantage · 5 Advantage plans with drug coverage
• Curry County7,965 with Medicare · 36% in Medicare Advantage · 5 Advantage plans with drug coverage
• De Baca County557 with Medicare · 36% in Medicare Advantage · 5 Advantage plans with drug coverage
• Doña Ana County49,328 with Medicare · 55% in Medicare Advantage · 9 Advantage plans with drug coverage
• Eddy County10,157 with Medicare · 35% in Medicare Advantage · 5 Advantage plans with drug coverage
• Grant County9,236 with Medicare · 47% in Medicare Advantage · 10 Advantage plans with drug coverage
• Guadalupe County1,051 with Medicare · 62% in Medicare Advantage · 5 Advantage plans with drug coverage
• Harding County220 with Medicare · 27% in Medicare Advantage · 2 Advantage plans with drug coverage
• Hidalgo County1,121 with Medicare · 56% in Medicare Advantage · 4 Advantage plans with drug coverage
• Lea County9,851 with Medicare · 35% in Medicare Advantage · 3 Advantage plans with drug coverage
• Lincoln County6,528 with Medicare · 41% in Medicare Advantage · 6 Advantage plans with drug coverage
• Los Alamos County3,789 with Medicare · 15% in Medicare Advantage · 11 Advantage plans with drug coverage
• Luna County6,807 with Medicare · 63% in Medicare Advantage · 7 Advantage plans with drug coverage
• McKinley County12,650 with Medicare · 34% in Medicare Advantage · 3 Advantage plans with drug coverage
• Mora County1,565 with Medicare · 50% in Medicare Advantage · 9 Advantage plans with drug coverage
• Otero County14,606 with Medicare · 41% in Medicare Advantage · 2 Advantage plans with drug coverage
• Quay County2,517 with Medicare · 42% in Medicare Advantage · 5 Advantage plans with drug coverage
• Rio Arriba County9,854 with Medicare · 51% in Medicare Advantage · 12 Advantage plans with drug coverage
• Roosevelt County3,272 with Medicare · 40% in Medicare Advantage · 5 Advantage plans with drug coverage
• San Juan County25,018 with Medicare · 37% in Medicare Advantage · 5 Advantage plans with drug coverage
• San Miguel County7,427 with Medicare · 57% in Medicare Advantage · 16 Advantage plans with drug coverage
• Sandoval County37,734 with Medicare · 56% in Medicare Advantage · 19 Advantage plans with drug coverage
• Santa Fe County46,920 with Medicare · 42% in Medicare Advantage · 18 Advantage plans with drug coverage
• Sierra County4,641 with Medicare · 53% in Medicare Advantage · 7 Advantage plans with drug coverage
• Socorro County4,088 with Medicare · 56% in Medicare Advantage · 8 Advantage plans with drug coverage
• Taos County10,708 with Medicare · 46% in Medicare Advantage · 5 Advantage plans with drug coverage
• Torrance County3,937 with Medicare · 65% in Medicare Advantage · 18 Advantage plans with drug coverage
• Union County971 with Medicare · 24% in Medicare Advantage · 2 Advantage plans with drug coverage
• Valencia County18,102 with Medicare · 63% in Medicare Advantage · 16 Advantage plans with drug coverage

Sources: CMS Medicare Monthly Enrollment, July 2026, and the CMS 2027 plan landscape. Medicare Advantage here includes other Medicare health plans, such as cost plans and PACE. Before you meet any agent, check their New Mexico license.

Keep reading

• How to find a good Medicare agent near youWhere to look for a local Medicare agent, how to narrow the list to one or two, and the five-minute checks to do before you share anything.
• Medicare Open Enrollment checklist: what to check before December 7A step-by-step checklist for the October 15 to December 7, 2026 Open Enrollment Period: what to read in your plan's letter, what's changing for 2027, what you can switch, and what happens if you do nothing.
• Moving to another state with Medicare: what changes and what to doOriginal Medicare moves with you; most Medicare Advantage and drug plans don't. What happens to each kind of coverage when you move, your window to switch, and why your agent must be licensed in your new state.