Iowa · 99 counties

Medicare in Iowa by county

Official figures for each of Iowa's 99 counties: how many people have Medicare, how many are in Medicare Advantage, and how many plans are offered for 2027. Each page also lists licensed local agents and free help.

Last reviewed October 27, 2026. General information, not advice about any plan.

Most people with Medicare

Across Iowa, 710,415 people had Medicare in July 2026, 38% of them in Medicare Advantage or another Medicare health plan. The counties with the most:

Polk County 92,184 with Medicare · 44% in Medicare Advantage · 20 Advantage plans with drug coverage
Linn County 48,396 with Medicare · 48% in Medicare Advantage · 16 Advantage plans with drug coverage
Scott County 37,865 with Medicare · 48% in Medicare Advantage · 19 Advantage plans with drug coverage
Black Hawk County 28,937 with Medicare · 49% in Medicare Advantage · 16 Advantage plans with drug coverage
Johnson County 26,071 with Medicare · 33% in Medicare Advantage · 12 Advantage plans with drug coverage
Dubuque County 23,417 with Medicare · 61% in Medicare Advantage · 4 Advantage plans with drug coverage
Pottawattamie County 21,991 with Medicare · 46% in Medicare Advantage · 17 Advantage plans with drug coverage
Woodbury County 20,487 with Medicare · 45% in Medicare Advantage · 9 Advantage plans with drug coverage
Story County 16,241 with Medicare · 27% in Medicare Advantage · 4 Advantage plans with drug coverage
Dallas County 16,179 with Medicare · 38% in Medicare Advantage · 20 Advantage plans with drug coverage

All 99 counties, A to Z

Adair County1,923 with Medicare · 26% in Medicare Advantage · 13 Advantage plans with drug coverage
Adams County1,099 with Medicare · 16% in Medicare Advantage · 14 Advantage plans with drug coverage
Allamakee County3,828 with Medicare · 23% in Medicare Advantage · 13 Advantage plans with drug coverage
Appanoose County3,465 with Medicare · 42% in Medicare Advantage · 10 Advantage plans with drug coverage
Audubon County1,576 with Medicare · 20% in Medicare Advantage · 7 Advantage plans with drug coverage
Benton County6,190 with Medicare · 39% in Medicare Advantage · 20 Advantage plans with drug coverage
Black Hawk County28,937 with Medicare · 49% in Medicare Advantage · 16 Advantage plans with drug coverage
Boone County6,436 with Medicare · 34% in Medicare Advantage · 20 Advantage plans with drug coverage
Bremer County5,958 with Medicare · 33% in Medicare Advantage · 14 Advantage plans with drug coverage
Buchanan County4,943 with Medicare · 41% in Medicare Advantage · 18 Advantage plans with drug coverage
Buena Vista County4,035 with Medicare · 21% in Medicare Advantage · 9 Advantage plans with drug coverage
Butler County3,974 with Medicare · 32% in Medicare Advantage · 13 Advantage plans with drug coverage
Calhoun County2,750 with Medicare · 25% in Medicare Advantage · 12 Advantage plans with drug coverage
Carroll County5,495 with Medicare · 21% in Medicare Advantage · 13 Advantage plans with drug coverage
Cass County3,793 with Medicare · 24% in Medicare Advantage · 10 Advantage plans with drug coverage
Cedar County4,490 with Medicare · 37% in Medicare Advantage · 20 Advantage plans with drug coverage
Cerro Gordo County12,141 with Medicare · 28% in Medicare Advantage · 13 Advantage plans with drug coverage
Cherokee County3,205 with Medicare · 21% in Medicare Advantage · 7 Advantage plans with drug coverage
Chickasaw County3,043 with Medicare · 24% in Medicare Advantage · 7 Advantage plans with drug coverage
Clarke County2,130 with Medicare · 42% in Medicare Advantage · 17 Advantage plans with drug coverage
Clay County4,306 with Medicare · 19% in Medicare Advantage · 11 Advantage plans with drug coverage
Clayton County5,141 with Medicare · 36% in Medicare Advantage · 8 Advantage plans with drug coverage
Clinton County11,721 with Medicare · 43% in Medicare Advantage · 20 Advantage plans with drug coverage
Crawford County3,564 with Medicare · 24% in Medicare Advantage · 11 Advantage plans with drug coverage
Dallas County16,179 with Medicare · 38% in Medicare Advantage · 20 Advantage plans with drug coverage
Davis County1,912 with Medicare · 31% in Medicare Advantage · 3 Advantage plans with drug coverage
Decatur County1,921 with Medicare · 34% in Medicare Advantage · 13 Advantage plans with drug coverage
Delaware County4,461 with Medicare · 36% in Medicare Advantage · 20 Advantage plans with drug coverage
Des Moines County10,124 with Medicare · 31% in Medicare Advantage · 6 Advantage plans with drug coverage
Dickinson County5,911 with Medicare · 19% in Medicare Advantage · 12 Advantage plans with drug coverage
Dubuque County23,417 with Medicare · 61% in Medicare Advantage · 4 Advantage plans with drug coverage
Emmet County2,479 with Medicare · 17% in Medicare Advantage · 5 Advantage plans with drug coverage
Fayette County5,333 with Medicare · 33% in Medicare Advantage · 22 Advantage plans with drug coverage
Floyd County4,117 with Medicare · 28% in Medicare Advantage · 17 Advantage plans with drug coverage
Franklin County2,422 with Medicare · 20% in Medicare Advantage · 16 Advantage plans with drug coverage
Fremont County1,913 with Medicare · 28% in Medicare Advantage · 14 Advantage plans with drug coverage
Greene County2,502 with Medicare · 36% in Medicare Advantage · 13 Advantage plans with drug coverage
Grundy County3,065 with Medicare · 38% in Medicare Advantage · 20 Advantage plans with drug coverage
Guthrie County3,132 with Medicare · 35% in Medicare Advantage · 17 Advantage plans with drug coverage
Hamilton County3,583 with Medicare · 25% in Medicare Advantage · 17 Advantage plans with drug coverage
Hancock County2,741 with Medicare · 18% in Medicare Advantage · 16 Advantage plans with drug coverage
Hardin County4,525 with Medicare · 30% in Medicare Advantage · 20 Advantage plans with drug coverage
Harrison County3,733 with Medicare · 30% in Medicare Advantage · 11 Advantage plans with drug coverage
Henry County4,844 with Medicare · 28% in Medicare Advantage · 15 Advantage plans with drug coverage
Howard County2,488 with Medicare · 19% in Medicare Advantage · 3 Advantage plans with drug coverage
Humboldt County2,459 with Medicare · 21% in Medicare Advantage · 15 Advantage plans with drug coverage
Ida County1,760 with Medicare · 21% in Medicare Advantage · 10 Advantage plans with drug coverage
Iowa County4,177 with Medicare · 35% in Medicare Advantage · 19 Advantage plans with drug coverage
Jackson County5,399 with Medicare · 48% in Medicare Advantage · 20 Advantage plans with drug coverage
Jasper County9,026 with Medicare · 42% in Medicare Advantage · 20 Advantage plans with drug coverage
Jefferson County4,883 with Medicare · 45% in Medicare Advantage · 10 Advantage plans with drug coverage
Johnson County26,071 with Medicare · 33% in Medicare Advantage · 12 Advantage plans with drug coverage
Jones County5,055 with Medicare · 46% in Medicare Advantage · 20 Advantage plans with drug coverage
Keokuk County2,584 with Medicare · 35% in Medicare Advantage · 13 Advantage plans with drug coverage
Kossuth County4,127 with Medicare · 18% in Medicare Advantage · 16 Advantage plans with drug coverage
Lee County8,817 with Medicare · 25% in Medicare Advantage · 6 Advantage plans with drug coverage
Linn County48,396 with Medicare · 48% in Medicare Advantage · 16 Advantage plans with drug coverage
Louisa County2,590 with Medicare · 34% in Medicare Advantage · 17 Advantage plans with drug coverage
Lucas County2,276 with Medicare · 34% in Medicare Advantage · 13 Advantage plans with drug coverage
Lyon County2,540 with Medicare · 20% in Medicare Advantage · 8 Advantage plans with drug coverage
Madison County3,761 with Medicare · 42% in Medicare Advantage · 20 Advantage plans with drug coverage
Mahaska County5,014 with Medicare · 37% in Medicare Advantage · 14 Advantage plans with drug coverage
Marion County8,042 with Medicare · 34% in Medicare Advantage · 13 Advantage plans with drug coverage
Marshall County9,011 with Medicare · 42% in Medicare Advantage · 19 Advantage plans with drug coverage
Mills County3,572 with Medicare · 35% in Medicare Advantage · 15 Advantage plans with drug coverage
Mitchell County2,643 with Medicare · 18% in Medicare Advantage · 8 Advantage plans with drug coverage
Monona County2,442 with Medicare · 37% in Medicare Advantage · 9 Advantage plans with drug coverage
Monroe County1,927 with Medicare · 34% in Medicare Advantage · 10 Advantage plans with drug coverage
Montgomery County2,835 with Medicare · 31% in Medicare Advantage · 10 Advantage plans with drug coverage
Muscatine County9,595 with Medicare · 38% in Medicare Advantage · 20 Advantage plans with drug coverage
O'Brien County3,555 with Medicare · 18% in Medicare Advantage · 8 Advantage plans with drug coverage
Osceola County1,530 with Medicare · 19% in Medicare Advantage · 12 Advantage plans with drug coverage
Page County4,129 with Medicare · 27% in Medicare Advantage · 6 Advantage plans with drug coverage
Palo Alto County2,476 with Medicare · 15% in Medicare Advantage · 4 Advantage plans with drug coverage
Plymouth County5,903 with Medicare · 28% in Medicare Advantage · 9 Advantage plans with drug coverage
Pocahontas County1,957 with Medicare · 24% in Medicare Advantage · 8 Advantage plans with drug coverage
Polk County92,184 with Medicare · 44% in Medicare Advantage · 20 Advantage plans with drug coverage
Pottawattamie County21,991 with Medicare · 46% in Medicare Advantage · 17 Advantage plans with drug coverage
Poweshiek County4,568 with Medicare · 31% in Medicare Advantage · 20 Advantage plans with drug coverage
Ringgold County1,378 with Medicare · 21% in Medicare Advantage · 13 Advantage plans with drug coverage
Sac County2,691 with Medicare · 16% in Medicare Advantage · 8 Advantage plans with drug coverage
Scott County37,865 with Medicare · 48% in Medicare Advantage · 19 Advantage plans with drug coverage
Shelby County3,332 with Medicare · 25% in Medicare Advantage · 14 Advantage plans with drug coverage
Sioux County6,829 with Medicare · 12% in Medicare Advantage · 10 Advantage plans with drug coverage
Story County16,241 with Medicare · 27% in Medicare Advantage · 4 Advantage plans with drug coverage
Tama County4,155 with Medicare · 39% in Medicare Advantage · 20 Advantage plans with drug coverage
Taylor County1,625 with Medicare · 17% in Medicare Advantage · 1 Advantage plans with drug coverage
Union County3,106 with Medicare · 29% in Medicare Advantage · 13 Advantage plans with drug coverage
Van Buren County1,965 with Medicare · 33% in Medicare Advantage · 4 Advantage plans with drug coverage
Wapello County7,835 with Medicare · 44% in Medicare Advantage · 6 Advantage plans with drug coverage
Warren County11,595 with Medicare · 42% in Medicare Advantage · 20 Advantage plans with drug coverage
Washington County5,541 with Medicare · 34% in Medicare Advantage · 20 Advantage plans with drug coverage
Wayne County1,651 with Medicare · 34% in Medicare Advantage · 13 Advantage plans with drug coverage
Webster County8,488 with Medicare · 34% in Medicare Advantage · 12 Advantage plans with drug coverage
Winnebago County2,844 with Medicare · 22% in Medicare Advantage · 17 Advantage plans with drug coverage
Winneshiek County5,486 with Medicare · 15% in Medicare Advantage · 10 Advantage plans with drug coverage
Woodbury County20,487 with Medicare · 45% in Medicare Advantage · 9 Advantage plans with drug coverage
Worth County1,929 with Medicare · 26% in Medicare Advantage · 15 Advantage plans with drug coverage
Wright County3,132 with Medicare · 23% 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 Iowa license.

Ready to talk to someone local?

Search by ZIP code. Verified agents are listed first, and every listing is free to contact.

Most people with Medicare

All 99 counties, A to Z

Keep reading

Ready to talk to someone local?