Census 2010: Washington › Counties

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Washington by county

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County name 2010 total population 2000 total population Total change
since 2000
2010 White population 2010 White percentage White change
since 2000
King County 1,931,249 1,737,034 11.2% 1,325,845 119,801 16,147 282,075 14,486 76,096 96,799 172,378 1,758,871 54.9% 851,261 68.7% 6.2% 0.8% 14.6% 0.8% 3.9% 5.0% 8.9% 91.1% 44.5% 62,029 0.8% 27.6% 1.4% 50.2% 60.7% 71.1% 37.3% 81.0% 7.1% 7.3%
Snohomish County 713,335 606,024 17.7% 559,011 18,168 9,793 63,385 3,135 27,121 32,722 64,249 649,086 43.7% 286,659 78.4% 2.5% 1.4% 8.9% 0.4% 3.8% 4.6% 9.0% 91.0% 30.3% 18,334 7.7% 79.6% 18.7% 80.9% 83.9% 133.2% 60.8% 124.7% 12.4% 6.4%
Kitsap County 251,133 231,969 8.3% 207,369 6,650 4,040 12,396 2,310 3,919 14,449 15,686 235,447 37.6% 107,367 82.6% 2.6% 1.6% 4.9% 0.9% 1.6% 5.8% 6.2% 93.8% 32.4% 10,147 6.1% 0.0% 7.4% 21.6% 28.0% 18.4% 34.1% 63.2% 5.9% 9.5%
County name Total
households
Husband/wife
with children
Husband/wife
no children
Single male
with children
Single male
living alone
Single female
with children
Single female
living alone
King County 789,232 20.1% 25.2% 1.9% 14.6% 5.1% 16.4%
Snohomish County 268,325 23.6% 28.8% 2.7% 11.4% 6.0% 12.9%
Kitsap County 97,220 20.2% 32.9% 2.4% 11.8% 6.1% 13.3%
County name Family
households
Family
households %
Families
with kids
Families
with kids %
Non-family
households
Non-family
households %
Households
with seniors
Households
with seniors %
King County 461,510 58.5% 213,507 27.1% 327,722 41.5% 154,215 19.5%
Snohomish County 182,282 67.9% 86,756 32.3% 86,043 32.1% 53,584 20.0%
Kitsap County 65,820 67.7% 27,921 28.7% 31,400 32.3% 23,828 24.5%
County name Under 10 10-19 20-29 30-39 40-49 50-59 60-69 70-79 80 plus
King County 12.1% 11.8% 15.0% 15.6% 15.3% 14.0% 8.8% 4.2% 3.2%
Snohomish County 13.2% 13.8% 13.2% 14.0% 15.7% 14.5% 8.6% 4.1% 2.8%
Kitsap County 11.9% 13.2% 14.2% 11.4% 14.0% 15.4% 11.2% 5.1% 3.5%
County name Total population Median age Male total Male percentage Female total Female percentage
King County 1,931,249 37.1 962,090 49.8% 969,159 50.2%
Snohomish County 713,335 37.1 356,958 50.0% 356,377 50.0%
Kitsap County 251,133 39.4 127,155 50.6% 123,978 49.4%

* The USA TODAY Diversity Index represents the probability that two people from this area will have different ethnic backgrounds. A higher number reflects a more ethnically diverse population.

Credits: Ryan Pitts, Mike Tigas Special thanks: USA Today Census team