The median income of Island County residents was an inflation-adjusted $30,980 per year. Island County had 34,027 households in 2017, with a population of 80,323.
The county with the highest median resident income in the state was King County. King County's median income was $40,852 per year after adjusting for inflation – $9,872 more than Island County. It had 851,077 households in 2017 and a population of 2,118,119.
Whitman County had the lowest annual resident income among counties in Washington, with a median income of only $16,042 per year. That was $14,938 less than the median income in Island County at the time. Whitman County had 17,657 households in 2017 and a population of 47,794.
The table below shows the state's counties ranked by median annual resident earnings in 2017.
Rank | County | Earnings per resident ($$$) |
---|---|---|
1 | King County | 40,852 |
2 | Snohomish County | 36,659 |
3 | Thurston County | 34,801 |
4 | Kitsap County | 32,997 |
5 | Clark County | 32,697 |
6 | Pierce County | 32,553 |
7 | Island County | 30,980 |
8 | San Juan County | 30,906 |
9 | Benton County | 30,751 |
10 | Skagit County | 28,909 |
11 | Spokane County | 27,277 |
12 | Columbia County | 26,881 |
13 | Franklin County | 26,730 |
14 | Chelan County | 26,669 |
15 | Skamania County | 26,661 |
16 | Lincoln County | 26,534 |
17 | Mason County | 26,511 |
18 | Jefferson County | 26,449 |
19 | Clallam County | 26,448 |
20 | Douglas County | 26,127 |
21 | Whatcom County | 26,091 |
22 | Asotin County | 26,091 |
23 | Pend Oreille County | 26,077 |
24 | Walla Walla County | 25,638 |
25 | Cowlitz County | 25,563 |
26 | Stevens County | 24,848 |
27 | Grant County | 24,565 |
28 | Klickitat County | 24,529 |
29 | Wahkiakum County | 24,381 |
30 | Garfield County | 24,250 |
31 | Lewis County | 24,249 |
32 | Kittitas County | 24,232 |
33 | Adams County | 23,907 |
34 | Grays Harbor County | 23,885 |
35 | Yakima County | 23,193 |
36 | Okanogan County | 22,635 |
37 | Pacific County | 21,676 |
38 | Ferry County | 20,761 |
39 | Whitman County | 16,042 |