The median income of Dewey County residents was an inflation-adjusted $24,192 per year. Dewey County had 1,727 households in 2017, with a population of 4,904.
The county with the highest median resident income in the state was Canadian County. Canadian County's median income was $32,505 per year after adjusting for inflation – $8,313 more than Dewey County. It had 43,878 households in 2017 and a population of 132,922.
Choctaw County had the lowest annual resident income among counties in Oklahoma, with a median income of only $19,006 per year. That was $5,186 less than the median income in Dewey County at the time. Choctaw County had 5,962 households in 2017 and a population of 14,979.
The table below shows the state's counties ranked by median annual resident earnings in 2017.
| Rank | County | Earnings per resident ($$$) |
|---|---|---|
| 1 | Canadian County | 32,505 |
| 2 | Kingfisher County | 31,843 |
| 3 | Grant County | 31,302 |
| 4 | Rogers County | 30,717 |
| 5 | McClain County | 30,349 |
| 6 | Wagoner County | 30,267 |
| 7 | Cimarron County | 29,868 |
| 8 | Cleveland County | 29,595 |
| 9 | Tulsa County | 28,694 |
| 10 | Woodward County | 28,082 |
| 11 | Washita County | 28,039 |
| 12 | Oklahoma County | 27,867 |
| 13 | Logan County | 27,743 |
| 14 | Grady County | 27,462 |
| 15 | Noble County | 27,228 |
| 16 | Texas County | 27,103 |
| 17 | Beaver County | 27,086 |
| 18 | Osage County | 26,859 |
| 19 | Murray County | 26,764 |
| 20 | Major County | 26,584 |
| 21 | Washington County | 26,553 |
| 22 | Pontotoc County | 26,289 |
| 23 | Creek County | 26,284 |
| 24 | Roger Mills County | 25,952 |
| 25 | Garfield County | 25,949 |
| 26 | Harper County | 25,867 |
| 27 | Garvin County | 25,739 |
| 28 | Carter County | 25,519 |
| 29 | Pawnee County | 25,359 |
| 30 | Custer County | 25,161 |
| 31 | Pittsburg County | 24,996 |
| 32 | Lincoln County | 24,698 |
| 33 | Love County | 24,593 |
| 34 | Comanche County | 24,495 |
| 35 | Jackson County | 24,449 |
| 36 | Blaine County | 24,290 |
| 37 | Dewey County | 24,192 |
| 38 | Beckham County | 24,070 |
| 39 | Ellis County | 24,069 |
| 40 | Woods County | 23,978 |
| 41 | Stephens County | 23,895 |
| 42 | Kay County | 23,788 |
| 43 | Marshall County | 23,417 |
| 44 | Mayes County | 23,387 |
| 45 | Coal County | 23,362 |
| 46 | Cotton County | 23,198 |
| 47 | Muskogee County | 23,054 |
| 48 | Alfalfa County | 23,014 |
| 49 | Harmon County | 22,908 |
| 50 | Caddo County | 22,781 |
| 51 | Bryan County | 22,635 |
| 52 | Pottawatomie County | 22,602 |
| 53 | Nowata County | 22,547 |
| 54 | Kiowa County | 22,123 |
| 55 | Okmulgee County | 22,072 |
| 56 | Johnston County | 22,027 |
| 57 | McIntosh County | 21,499 |
| 58 | Tillman County | 21,458 |
| 59 | Cherokee County | 21,383 |
| 60 | Latimer County | 21,282 |
| 61 | Delaware County | 21,124 |
| 62 | Le Flore County | 21,117 |
| 63 | Atoka County | 21,054 |
| 64 | Craig County | 20,784 |
| 65 | Seminole County | 20,638 |
| 66 | Okfuskee County | 20,614 |
| 67 | McCurtain County | 20,608 |
| 68 | Ottawa County | 20,517 |
| 69 | Hughes County | 20,496 |
| 70 | Jefferson County | 20,378 |
| 71 | Payne County | 20,166 |
| 72 | Greer County | 20,034 |
| 73 | Haskell County | 19,679 |
| 74 | Pushmataha County | 19,559 |
| 75 | Adair County | 19,447 |
| 76 | Sequoyah County | 19,388 |
| 77 | Choctaw County | 19,006 |
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