CMS Medicare enrollment · April 2026
Oregon Medicare Enrollment
State and county enrollment from CMS, including Original Medicare, Medicare Advantage and Other Health Plans, and Part D coverage.
Informational only. These enrollment counts do not compare plans or provide medical, financial, or enrollment advice.
Oregon enrollment figures
- Total Medicare enrollment
- 969.1K
- Original Medicare
- 445.6K
- MA & Other share
- 54%
- Part D coverage
- 82.7%
969,057
445,553 beneficiaries
CMS combined delivery-system measure
801,466 beneficiaries
County enrollment
37 CMS county rows for Oregon. Unavailable values remain marked as not reported rather than estimated.
| County | Total | Original Medicare | MA & Other | MA & Other share | Part D share |
|---|---|---|---|---|---|
| Baker County | 5,483 | 4,607 | 876 | 16% | 73.8% |
| Benton County | 19,839 | 9,895 | 9,944 | 50.1% | 84.9% |
| Clackamas County | 98,709 | 33,277 | 65,432 | 66.3% | 85.3% |
| Clatsop County | 11,763 | 10,876 | 887 | 7.5% | 77.6% |
| Columbia County | 13,720 | 5,340 | 8,380 | 61.1% | 81.6% |
| Coos County | 21,944 | 16,449 | 5,495 | 25% | 76.7% |
| Crook County | 8,300 | 4,863 | 3,437 | 41.4% | 76.8% |
| Curry County | 9,944 | 9,244 | 700 | 7% | 74.9% |
| Deschutes County | 52,949 | 31,823 | 21,126 | 39.9% | 80.6% |
| Douglas County | 36,356 | 17,617 | 18,739 | 51.5% | 79% |
| Gilliam County | 630 | 524 | 106 | 16.8% | 71.3% |
| Grant County | 2,384 | 2,280 | 104 | 4.4% | 71.6% |
| Harney County | 2,190 | 2,109 | 81 | 3.7% | 73.2% |
| Hood River County | 5,222 | 3,424 | 1,798 | 34.4% | 77.8% |
| Jackson County | 61,724 | 31,226 | 30,498 | 49.4% | 81.1% |
| Jefferson County | 6,509 | 3,864 | 2,645 | 40.6% | 74.1% |
| Josephine County | 28,615 | 12,047 | 16,568 | 57.9% | 80.4% |
| Klamath County | 18,939 | 11,213 | 7,726 | 40.8% | 76.8% |
| Lake County | 2,425 | 2,335 | 90 | 3.7% | 72.7% |
| Lane County | 97,333 | 36,047 | 61,286 | 63% | 84.7% |
| Lincoln County | 18,312 | 12,266 | 6,046 | 33% | 81.1% |
| Linn County | 32,869 | 12,772 | 20,097 | 61.1% | 83.8% |
| Malheur County | 6,582 | 4,320 | 2,262 | 34.4% | 82% |
| Marion County | 71,956 | 25,112 | 46,844 | 65.1% | 85.3% |
| Morrow County | 2,380 | 2,003 | 377 | 15.8% | 75.6% |
| Multnomah County | 138,113 | 47,327 | 90,786 | 65.7% | 85.8% |
| Polk County | 20,514 | 7,243 | 13,271 | 64.7% | 83.9% |
| Sherman County | 575 | 412 | 163 | 28.3% | 77% |
| Tillamook County | 8,888 | 7,488 | 1,400 | 15.8% | 77.2% |
| Umatilla County | 16,073 | 15,308 | 765 | 4.8% | 75.3% |
| Union County | 6,931 | 6,532 | 399 | 5.8% | 77.5% |
| Unknown | Not reported | Not reported | Not reported | Not reported | Not reported |
| Wallowa County | 2,678 | 2,272 | 406 | 15.2% | 78.3% |
| Wasco County | 6,680 | 4,511 | 2,169 | 32.5% | 76.8% |
| Washington County | 106,147 | 38,239 | 67,908 | 64% | 84.3% |
| Wheeler County | 520 | 495 | 25 | 4.8% | 69% |
| Yamhill County | 24,861 | 10,193 | 14,668 | 59% | 84.1% |
Source and interpretation
CMS Medicare Monthly Enrollment, April 2026, published 2026-07-23. “MA & Other” retains the official combined CMS field label.
- CMS suppresses some small counts with an asterisk; suppressed values remain null in this snapshot.
- Medicare Advantage and Other Health Plans is the CMS-published combined measure and is not limited to Medicare Advantage alone.
- Enrollment counts describe a reporting month and do not compare plan benefits, provider networks, quality, or personal costs.