Washington: Medicare, senior and household data by county
Washington has 1,299,185 residents age 65 and older across 39 counties (Census ACS 2020-2024), and 49.9% of its 1,570,851 Medicare beneficiaries are in Medicare Advantage (CMS, February 2026). LeadLoom has 1,896,387 records available here, 78,405 of them turning 65 in the next 12 months.
Every county in Washington
| County | Turning 65 next 12 mo | Records available | Residents 65+ | Share 65+ | Medicare Advantage | Median income |
|---|---|---|---|---|---|---|
| King | 20,276 | 491,519 | 320,899 | 14.0% | 54.0% | $124,746 |
| Pierce | 9,249 | 214,272 | 137,536 | 14.8% | 52.1% | $99,564 |
| Snohomish | 8,930 | 201,191 | 124,763 | 14.8% | 60.1% | $111,246 |
| Spokane | 5,927 | 140,885 | 95,527 | 17.4% | 57.4% | $78,582 |
| Clark | 5,131 | 128,350 | 86,076 | 16.7% | 67.4% | $97,536 |
| Kitsap | 3,385 | 79,871 | 54,611 | 19.7% | 40.3% | $104,158 |
| Thurston | 3,170 | 80,532 | 56,072 | 18.7% | 53.0% | $96,563 |
| Whatcom | 2,334 | 61,522 | 43,568 | 18.9% | 47.2% | $81,784 |
| Benton | 2,048 | 48,929 | 33,796 | 15.9% | 32.2% | $89,874 |
| Yakima | 2,009 | 47,866 | 37,267 | 14.5% | 46.4% | $70,656 |
| Skagit | 1,483 | 38,320 | 29,691 | 22.6% | 45.3% | $89,263 |
| Cowlitz | 1,255 | 31,204 | 22,230 | 19.8% | 67.7% | $76,531 |
| Island | 1,152 | 30,310 | 23,259 | 26.8% | 41.7% | $90,551 |
| Clallam | 1,106 | 28,255 | 25,067 | 32.2% | 23.7% | $70,370 |
| Lewis | 988 | 24,591 | 18,211 | 21.4% | 56.7% | $74,796 |
| Grays Harbor | 981 | 23,166 | 17,980 | 23.3% | 25.7% | $64,414 |
| Chelan | 958 | 22,374 | 16,769 | 20.9% | 40.7% | $82,381 |
| Mason | 848 | 22,003 | 16,468 | 24.2% | 45.5% | $83,270 |
| Grant | 840 | 19,581 | 14,822 | 14.6% | 36.9% | $73,267 |
| Stevens | 672 | 16,927 | 12,178 | 25.3% | 35.3% | $69,327 |
| Walla Walla | 586 | 15,335 | 12,409 | 20.0% | 33.3% | $74,202 |
| Franklin | 571 | 14,084 | 10,257 | 10.4% | 36.9% | $86,714 |
| Kittitas | 551 | 13,330 | 8,040 | 17.0% | 27.8% | $73,804 |
| Jefferson | 497 | 15,140 | 13,673 | 40.7% | 17.6% | $74,048 |
| Douglas | 479 | 11,170 | 8,180 | 18.4% | 40.6% | $80,363 |
| Okanogan | 479 | 12,745 | 10,074 | 23.2% | 29.4% | $63,207 |
| Pacific | 353 | 9,168 | 7,921 | 33.0% | 22.1% | $67,081 |
| Whitman | 345 | 8,224 | 5,597 | 11.9% | 28.8% | $55,406 |
| Klickitat | 301 | 7,698 | 5,878 | 25.1% | 11.3% | $71,042 |
| Asotin | 272 | 6,647 | 5,661 | 25.2% | 26.7% | $72,283 |
| Pend Oreille | 242 | 5,390 | 3,841 | 27.3% | 30.2% | $67,436 |
| San Juan | 238 | 7,598 | 6,656 | 36.0% | 18.1% | $84,800 |
| Skamania | 216 | 4,301 | 3,024 | 24.4% | 25.6% | $93,265 |
| Lincoln | 156 | 4,171 | 3,012 | 26.2% | 19.5% | $71,512 |
| Adams | 109 | 2,903 | 2,529 | 12.2% | 33.9% | $66,136 |
| Ferry | 106 | 2,760 | 2,263 | 30.6% | 26.0% | $55,614 |
| Wahkiakum | 71 | 1,830 | 1,590 | 34.1% | 45.5% | $62,653 |
| Columbia | 58 | 1,468 | 1,177 | 29.3% | 22.6% | $71,810 |
| Garfield | 33 | 757 | 613 | 26.1% | 13.1% | $64,884 |
About this data
Inventory figures count the LeadLoom records that can be bought right now, after sold, reserved and opted-out records are removed; they refresh within a minute of any sale. Every other figure is a published statistic about the area, never a fact about a person: U.S. Census Bureau ACS 2020-2024 5-year estimates, CMS Medicare Monthly Enrollment (February 2026), CDC PLACES model-based estimates, the FEMA National Risk Index (December 2025) and IRS Statistics of Income (tax year 2022).
Cite as: TheWoob Explorer, "Washington", https://explorer.thewoob.com/explorer/WA, retrieved 2026-10-19. Compiled data licensed CC BY 4.0; government source data is public domain.