Maryland counties
Medicare Advantage and marketplace plans are set by area, so start with your county. 24 listed.
| County | Population (2023 est.) | Rank in Maryland | Medicare plans leaving (2027) |
|---|---|---|---|
| Allegany County | 67,273 | 16 | 8 |
| Anne Arundel County | 594,582 | 4 | 11 |
| Baltimore city | 565,239 | 5 | 11 |
| Baltimore County | 844,703 | 3 | 16 |
| Calvert County | 94,728 | 15 | 5 |
| Caroline County | 33,593 | 20 | 9 |
| Carroll County | 176,639 | 9 | 17 |
| Cecil County | 105,672 | 13 | 6 |
| Charles County | 171,973 | 10 | 8 |
| Dorchester County | 32,879 | 21 | 11 |
| Frederick County | 293,391 | 7 | 14 |
| Garrett County | 28,423 | 22 | 12 |
| Harford County | 264,644 | 8 | 11 |
| Howard County | 336,001 | 6 | 9 |
| Kent County | 19,303 | 24 | 12 |
| Montgomery County | 1,058,474 | 1 | 16 |
| Prince George's County | 947,430 | 2 | 13 |
| Queen Anne's County | 52,508 | 18 | 11 |
| Somerset County | 24,910 | 23 | 9 |
| St. Mary's County | 115,281 | 12 | 7 |
| Talbot County | 37,823 | 19 | 10 |
| Washington County | 155,813 | 11 | 11 |
| Wicomico County | 104,800 | 14 | 9 |
| Worcester County | 54,171 | 17 | 15 |
Population: U.S. Census Bureau Population Estimates, 2023.
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Call 855-367-1095 Open 8 AM-10 PM Eastern timeReviewed by Richard Lander, licensed insurance agent (NPN 21255551), Lander LLC. Last updated October 3, 2026. This page is educational and is not a quote, an offer of coverage, or legal or tax advice.