Washington
As of the census of 2000, there were 5894121 people in the state, organized into 2271398 households, and 1499127 families residing in the state. The population density was 88.6 people per square mile (34.21/kmē), it is the 25th most populated state in terms of population density. There were 2451075 housing units at an average density of 36.8 per square mile (14.21/kmē). The average household size was 2.53 persons, and the average family size was 3.07 persons. In the state the population was spread out, with 25.7% under the age of 18, 9.5% from 18 to 24, 30.8% from 25 to 44, 22.8% from 45 to 64, and 11.2% who were 65 or older. For every 100 males there were 100.9 females. For every 100 males age 18 and over, there were 103.1 females. The median age of the state's population was 35.3 years, the median age of male residents at 34.4 and the median age of female residents at 36.3. The July 2008 population estimate is 5894121, The racial or ethnic makeup of the state was 4821823 White, 190267 Black or African American, 93301 American Indian, 322335 Asian, 23953 Native Hawaiian, 213519 from two or more races and 228923 Ohter races.
The median income for a household in the state was $45776, it is 14th wealthiest state by median household income in United States. The median income for a family in the state was $53760, making it the 13th wealthiest state by median family income among the United States. The per capita income for the state was $22973, it is the 12th highest state by per capita income in the U.S. state of America. The median income is $25498, The median income for males was $31727 versus $19688 for females. The Bureau of Economic Analysis estimates that the total GDP in 2008 was $322.8 billion, Washington would be the 14th highest state by gross domestic product in the U.S. state of America. Per capita personal income in 2008 was $40407.
In 2000, 1584701 pupils and students, of which 50.34% are male and 49.66% are female, 26.89% of the total population, are in the education system. Of which, percentage of enrollment student are in, 6.24% nursery or pri school, 5.21% kindergarten, 44% elementary school, 21.94% high school and 22.62% College graduate school.
| Rank | County | Total Area mi2 | Land Area mi2 | Water Area mi2 | Population | Density mi2 | Per capita Income | House hold Income | Family Income |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Adams County | 1929.69 | 1924.96 | 4.73 | 16428 | 8.5 | 13534 | 33888 | 37075 |
| 2 | Asotin County | 640.69 | 635.34 | 5.34 | 20551 | 32.3 | 17748 | 33524 | 40592 |
| 3 | Benton County | 1760.12 | 1703.09 | 57.03 | 142475 | 83.7 | 21301 | 47044 | 54146 |
| 4 | Chelan County | 2993.62 | 2921.37 | 72.25 | 66616 | 22.8 | 19273 | 37316 | 46293 |
| 5 | Clallam County | 2670.34 | 1739.45 | 930.89 | 64525 | 37.1 | 19517 | 36449 | 44381 |
| 6 | Clark County | 656.22 | 628.22 | 27.99 | 345238 | 549.5 | 21448 | 48376 | 54016 |
| 7 | Columbia County | 873.53 | 868.81 | 4.71 | 4064 | 4.7 | 17374 | 33500 | 44038 |
| 8 | Cowlitz County | 1166.33 | 1138.64 | 27.69 | 92948 | 81.6 | 18583 | 39797 | 46532 |
| 9 | Douglas County | 1848.69 | 1820.53 | 28.17 | 32603 | 17.9 | 17148 | 38464 | 43777 |
| 10 | Ferry County | 2257.46 | 2203.98 | 53.48 | 7260 | 3.3 | 15019 | 30388 | 35691 |
| 11 | Franklin County | 1265.35 | 1242.4 | 22.95 | 49347 | 39.7 | 15459 | 38991 | 41967 |
| 12 | Garfield County | 718.19 | 710.55 | 7.64 | 2397 | 3.4 | 16992 | 33398 | 41645 |
| 13 | Grant County | 2791.29 | 2681.06 | 110.23 | 74698 | 27.9 | 15037 | 35276 | 38938 |
| 14 | Grays Harbor County | 2224.44 | 1916.89 | 307.55 | 67194 | 35.1 | 16799 | 34160 | 39709 |
| 15 | Island County | 517.39 | 208.43 | 308.95 | 71558 | 343.3 | 21472 | 45513 | 51363 |
| 16 | Jefferson County | 2183.52 | 1814.23 | 369.29 | 25953 | 14.3 | 22211 | 37869 | 45415 |
| 17 | King County | 2306.53 | 2126.04 | 180.48 | 1737034 | 817 | 29521 | 53157 | 66035 |
| 18 | Kitsap County | 565.98 | 395.97 | 170.01 | 231969 | 585.8 | 22317 | 46840 | 53878 |
| 19 | Kittitas County | 2333.11 | 2297.19 | 35.93 | 33362 | 14.5 | 18928 | 32546 | 46057 |
| 20 | Klickitat County | 1904.18 | 1872.37 | 31.8 | 19161 | 10.2 | 16502 | 34267 | 40414 |
| 21 | Lewis County | 2436.26 | 2407.64 | 28.63 | 68600 | 28.5 | 17082 | 35511 | 41105 |
| 22 | Lincoln County | 2339.71 | 2311.21 | 28.51 | 10184 | 4.4 | 17888 | 35255 | 41269 |
| 23 | Mason County | 1051.03 | 961.06 | 89.97 | 49405 | 51.4 | 18056 | 39586 | 44246 |
| 24 | Okanogan County | 5315.16 | 5268.07 | 47.09 | 39564 | 7.5 | 14900 | 29726 | 35012 |
| 25 | Pacific County | 1223.5 | 932.97 | 290.52 | 20984 | 22.5 | 17322 | 31209 | 39302 |
| 26 | Pend Oreille County | 1425.32 | 1400.27 | 25.05 | 11732 | 8.4 | 15731 | 31677 | 36977 |
| 27 | Pierce County | 1806.5 | 1678.91 | 127.58 | 700820 | 417.4 | 20948 | 45204 | 52098 |
| 28 | San Juan County | 621.07 | 174.92 | 446.15 | 14077 | 80.5 | 30603 | 43491 | 51835 |
| 29 | Skagit County | 1920.47 | 1735.14 | 185.33 | 102979 | 59.3 | 21256 | 42381 | 48347 |
| 30 | Skamania County | 1683.86 | 1656.44 | 27.42 | 9872 | 6 | 18002 | 39317 | 44586 |
| 31 | Snohomish County | 2196.41 | 2089.06 | 107.35 | 606024 | 290.1 | 23417 | 53060 | 60726 |
| 32 | Spokane County | 1780.72 | 1763.64 | 17.09 | 417939 | 237 | 19233 | 37308 | 46463 |
| 33 | Stevens County | 2540.64 | 2478.3 | 62.34 | 40066 | 16.2 | 15895 | 34673 | 40250 |
| 34 | Thurston County | 773.64 | 727.02 | 46.62 | 207355 | 285.2 | 22415 | 46975 | 55027 |
| 35 | Wahkiakum County | 286.69 | 264.24 | 22.45 | 3824 | 14.5 | 19063 | 39444 | 47604 |
| 36 | Walla Walla County | 1299.25 | 1270.51 | 28.74 | 55180 | 43.4 | 16509 | 35900 | 44962 |
| 37 | Whatcom County | 2503.55 | 2119.53 | 384.02 | 166814 | 78.7 | 20025 | 40005 | 49325 |
| 38 | Whitman County | 2177.6 | 2159.37 | 18.23 | 40740 | 18.9 | 15298 | 28584 | 44830 |
| 39 | Yakima County | 4311.61 | 4296.23 | 15.38 | 222581 | 51.8 | 15606 | 34828 | 39746 |