973,880
people with Medicare
July 2026, CMS Medicare Monthly Enrollment
54%
in Medicare Advantage or other health plans
July 2026, CMS
61
Medicare Advantage plans open to everyone, 2027
CY2027 Landscape, CMS
115,674
members whose plan ends December 31, 2026
CMS Landscape, crosswalk and October 2026 enrollment
Statewide
- 973,880 people with Medicare in July 2026: 450,352 in Original Medicare and 523,528 in Medicare Advantage and other health plans. Source: CMS Medicare Monthly Enrollment (data.cms.gov).
- 519,302 Medicare Advantage members (HMO and PPO plans, special needs and employer plans included) in October 2026. Source: CMS Monthly Enrollment by Contract, Plan, State and County, October 2026. CMS hides counts of 10 or fewer, so the real total is a little higher.
- 61 Medicare Advantage plans open to everyone, 26 special needs plans and 14 companies in Oregon for 2027; 8 standalone Part D plans statewide. Source: CMS CY2027 Medicare Advantage and Part D Landscape file (November 2026 release).
- 6 counties with no Medicare Advantage plan open to everyone in 2027: Curry, Grant, Harney, Lake, Umatilla, Union. At most special needs plans and employer plans are offered there; Original Medicare, Medigap and Part D are still available. Source: CMS CY2027 Medicare Advantage and Part D Landscape file (November 2026 release).
- 115,674 members whose Medicare Advantage plan ends December 31, 2026: 75,109 because their company leaves their county and 40,565 because their plan ends where the company stays. Sources: CMS CY2027 Medicare Advantage and Part D Landscape file (November 2026 release), CMS 2027 Part C&D Plan Crosswalk (which 2026 plans renew, merge or end) and CMS Monthly Enrollment by Contract, Plan, State and County, October 2026. Details on plans ending in 2027.
- Counties with the most people on Medicare: Multnomah (138,852), Washington (106,942), Clackamas (99,358), Lane (97,708), Marion (72,310).
By county
Each county's numbers, with the same sources and dates as above. Download the table (CSV).
| County | Region | People with Medicare | Original Medicare | Medicare Advantage and other plans | Share in Medicare Advantage | Plans open to everyone, 2027 | Special needs plans, 2027 | Companies, 2027 | Members whose plan ends |
|---|---|---|---|---|---|---|---|---|---|
| Baker County | Eastern Oregon | 5,506 | 4,619 | 887 | 16% | 5 | 0 | 1 | 0 |
| Benton County | Willamette Valley | 19,959 | 10,029 | 9,930 | 50% | 16 | 9 | 6 | 1,544 |
| Clackamas County | Portland Metro | 99,358 | 33,748 | 65,610 | 66% | 32 | 15 | 11 | 14,149 |
| Clatsop County | Oregon Coast | 11,818 | 10,913 | 905 | 8% | 5 | 2 | 1 | 0 |
| Columbia County | Portland Metro | 13,763 | 5,383 | 8,380 | 61% | 26 | 7 | 8 | 225 |
| Coos County | Oregon Coast | 21,983 | 16,522 | 5,461 | 25% | 1 | 0 | 1 | 0 |
| Crook County | Central Oregon | 8,345 | 4,930 | 3,415 | 41% | 6 | 4 | 2 | 2,366 |
| Curry County | Oregon Coast | 9,968 | 9,267 | 701 | 7% | 0 | 1 | 1 | 0 |
| Deschutes County | Central Oregon | 53,236 | 32,236 | 21,000 | 39% | 3 | 1 | 1 | 14,400 |
| Douglas County | Southern Oregon | 36,476 | 17,803 | 18,673 | 51% | 4 | 2 | 3 | 4,706 |
| Gilliam County | Columbia Gorge and North Central | 641 | 529 | 112 | 17% | 8 | 3 | 2 | 0 |
| Grant County | Eastern Oregon | 2,390 | 2,286 | 104 | 4% | 0 | 0 | 0 | 0 |
| Harney County | Eastern Oregon | 2,208 | 2,126 | 82 | 4% | 0 | 0 | 0 | 0 |
| Hood River County | Columbia Gorge and North Central | 5,260 | 3,475 | 1,785 | 34% | 14 | 4 | 4 | 973 |
| Jackson County | Southern Oregon | 62,135 | 31,597 | 30,538 | 49% | 5 | 6 | 6 | 16,786 |
| Jefferson County | Central Oregon | 6,527 | 3,920 | 2,607 | 40% | 3 | 1 | 1 | 1,770 |
| Josephine County | Southern Oregon | 28,695 | 12,176 | 16,519 | 58% | 5 | 5 | 5 | 10,872 |
| Klamath County | Southern Oregon | 18,999 | 11,358 | 7,641 | 40% | 6 | 5 | 3 | 280 |
| Lake County | Southern Oregon | 2,427 | 2,342 | 85 | 4% | 0 | 0 | 0 | 0 |
| Lane County | Willamette Valley | 97,708 | 36,309 | 61,399 | 63% | 26 | 10 | 8 | 4,880 |
| Lincoln County | Oregon Coast | 18,303 | 12,290 | 6,013 | 33% | 4 | 3 | 2 | 0 |
| Linn County | Willamette Valley | 32,991 | 12,899 | 20,092 | 61% | 20 | 10 | 7 | 1,996 |
| Malheur County | Eastern Oregon | 6,658 | 4,366 | 2,292 | 34% | 6 | 0 | 1 | 0 |
| Marion County | Willamette Valley | 72,310 | 25,437 | 46,873 | 65% | 22 | 11 | 8 | 1,909 |
| Morrow County | Eastern Oregon | 2,381 | 2,003 | 378 | 16% | 5 | 0 | 1 | 0 |
| Multnomah County | Portland Metro | 138,852 | 48,130 | 90,722 | 65% | 32 | 13 | 10 | 16,563 |
| Polk County | Willamette Valley | 20,594 | 7,292 | 13,302 | 65% | 19 | 7 | 6 | 993 |
| Sherman County | Columbia Gorge and North Central | 570 | 406 | 164 | 29% | 11 | 3 | 3 | 93 |
| Tillamook County | Oregon Coast | 8,930 | 7,498 | 1,432 | 16% | 5 | 2 | 1 | 0 |
| Umatilla County | Eastern Oregon | 16,140 | 15,382 | 758 | 5% | 0 | 0 | 0 | 0 |
| Union County | Eastern Oregon | 6,919 | 6,528 | 391 | 6% | 0 | 0 | 0 | 0 |
| Wallowa County | Eastern Oregon | 2,694 | 2,281 | 413 | 15% | 5 | 0 | 1 | 0 |
| Wasco County | Columbia Gorge and North Central | 6,701 | 4,554 | 2,147 | 32% | 7 | 4 | 3 | 1,344 |
| Washington County | Portland Metro | 106,942 | 38,907 | 68,035 | 64% | 32 | 15 | 11 | 15,993 |
| Wheeler County | Columbia Gorge and North Central | 517 | 493 | 24 | 5% | 3 | 3 | 1 | 0 |
| Yamhill County | Willamette Valley | 24,976 | 10,318 | 14,658 | 59% | 27 | 9 | 8 | 3,832 |
How these are counted
- People with Medicare: total beneficiaries in CMS's Medicare Monthly Enrollment file, July 2026, by county of residence. "Medicare Advantage and other plans" is CMS's category for Medicare Advantage and other Medicare health plans.
- Plans open to everyone: Medicare Advantage plans (with or without drug coverage) that aren't special needs plans, counted by contract and plan in the CY2027 Landscape file.
- Members whose plan ends: October 2026 members of regular plans that end or leave their county, from the Landscape files and the 2027 Plan Crosswalk; people CMS moves into another plan that still covers their county aren't counted.
- We don't show plans' premiums, cost sharing, star ratings or benefits.
Sources
- CMS Medicare Monthly Enrollment (data.cms.gov)
- CMS CY2027 Medicare Advantage and Part D Landscape file (November 2026 release)
- CMS Monthly Enrollment by Contract, Plan, State and County, October 2026
- CMS 2027 Part C&D Plan Crosswalk (which 2026 plans renew, merge or end)
Frequently asked questions
How many people have Medicare in Oregon?
973,880 Oregonians had Medicare in July 2026, according to CMS's Medicare Monthly Enrollment data: 450,352 in Original Medicare and 523,528 in Medicare Advantage and other health plans.
How many Medicare Advantage plans are there in Oregon for 2027?
CMS's CY2027 Landscape file lists 61 Medicare Advantage plans open to everyone with Medicare somewhere in Oregon, plus 26 special needs plans, from 14 companies. Plans are sold by county, so the number where you live is lower; 6 counties have none open to everyone.
Can I use these numbers?
Yes. They are public CMS data compiled by OregonMedicare.org; please cite CMS and this page. The county table is also a CSV file.
Why don't you show premiums or star ratings?
Plan premiums, costs, benefits and ratings belong with the plans themselves. To see the plans for your ZIP code, compare plans on PlanMatch, or contact Medicare.gov or 1-800-MEDICARE for information on all of your options.