This is less than a one percent rise in Snohomish County’s population, from 829,331 in 2020 to 833,540 in 2021.
Snohomish County had the third largest population in Washington in 2021.
The US Census Bureau found more than 73 percent of counties in the US saw a natural decrease in population in 2021. This is up from a 55.5 percent increase in 2020.
The Midwest suffered the most sustained population decreases, with many counties along the US East Coast and through the Rocky Mountains seeing increases.
The US population continues to grow, though at a slower rate than before.
Washington Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| San Juan County | 17,818 | 18,557 | 4.1% |
| Wahkiakum County | 4,443 | 4,582 | 3.1% |
| Pend Oreille County | 13,482 | 13,886 | 3% |
| Lincoln County | 10,920 | 11,232 | 2.9% |
| Mason County | 66,028 | 67,615 | 2.4% |
| Garfield County | 2,292 | 2,346 | 2.4% |
| Columbia County | 3,949 | 4,042 | 2.4% |
| Lewis County | 82,474 | 84,398 | 2.3% |
| Kittitas County | 44,589 | 45,499 | 2% |
| Pacific County | 23,470 | 23,948 | 2% |
| Stevens County | 46,566 | 47,426 | 1.8% |
| Jefferson County | 33,048 | 33,605 | 1.7% |
| Douglas County | 42,998 | 43,696 | 1.6% |
| Klickitat County | 22,783 | 23,118 | 1.5% |
| Grays Harbor County | 75,811 | 76,841 | 1.4% |
| Benton County | 207,230 | 210,025 | 1.3% |
| Ferry County | 7,178 | 7,273 | 1.3% |
| Clark County | 505,013 | 511,404 | 1.3% |
| Franklin County | 97,076 | 98,268 | 1.2% |
| Okanogan County | 42,118 | 42,634 | 1.2% |
| Clallam County | 77,280 | 78,209 | 1.2% |
| Skamania County | 12,034 | 12,170 | 1.1% |
| Spokane County | 540,700 | 546,040 | 1% |
| Grant County | 99,365 | 100,297 | 0.9% |
| Thurston County | 295,729 | 297,977 | 0.8% |
| Whatcom County | 227,304 | 228,831 | 0.7% |
| Skagit County | 129,852 | 130,696 | 0.6% |
| Chelan County | 79,185 | 79,646 | 0.6% |
| Island County | 86,948 | 87,432 | 0.6% |
| Cowlitz County | 110,924 | 111,524 | 0.5% |
| Snohomish County | 829,331 | 833,540 | 0.5% |
| Asotin County | 22,290 | 22,397 | 0.5% |
| Pierce County | 922,828 | 925,708 | 0.3% |
| Whitman County | 47,786 | 47,873 | 0.2% |
| Walla Walla County | 62,574 | 62,682 | 0.2% |
| Adams County | 20,605 | 20,621 | 0.1% |
| Yakima County | 256,533 | 256,035 | -0.2% |
| Kitsap County | 275,660 | 274,314 | -0.5% |
| King County | 2,272,571 | 2,252,305 | -0.9% |
ORGANIZATIONS IN THIS STORY
City of Monroe• Lake Stickney• Bothell West• Silvana• Martha Lake• City of Edmonds• City of Sultan• Clearview• Sisco Heights• Silver Firs• Arlington Heights• Town of Darrington• Swede Heaven• City of Mountlake Terrace• City of Marysville• North Sultan• Alderwood Manor• Cathcart• Lake Roesiger• Machias• City of Gold Bar• Oso• Sunday Lake• May Creek• Bunk Foss• City of Lynnwood• City of Everett• North Lynnwood• City of Mill Creek• Monroe North• Startup• City of Stanwood• Three Lakes• City of Granite Falls• Mill Creek East• Lake Bosworth• City of Arlington• Bryant• Woods Creek• North Marysville• Verlot• Eastmont• Esperance• Lake Ketchum• High Bridge• Bothell East• Picnic Point• Lake Cassidy• Meadowdale• City Of Mukilteo• Northwest Stanwood• Canyon Creek• Warm Beach• Fobes Hill• Hat Island• Larch Way• City Of Woodway• Cavalero• City Of Lake Stevens• City Of Snohomish• Lochsloy• Maltby• Chain Lake• City Of Brier• Town Of Index
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