The median income of Grand Forks County residents was $28,550 per year, adjusted for inflation. It had 30,215 households with a population of 70,400.
The county with the highest median resident income in the state was Williams County with $43,776 per year after adjusting for inflation – $15,226 more than Grand Forks County. It had 13,695 households with a population of 34,061.
The county with the lowest median resident income in the state was Sioux County with $21,894 per year after adjusting for inflation – $6,656 less than Grand Forks County. It had 1,110 households with a population of 4,413.
North Dakota counties by earnings per resident (2018)
| Rank | County | Earnings per resident |
|---|---|---|
| 1 | Williams County | $43,776 |
| 2 | Billings County | $41,277 |
| 3 | Burke County | $40,950 |
| 4 | McKenzie County | $39,729 |
| 5 | Stark County | $39,708 |
| 6 | Sargent County | $38,915 |
| 7 | Burleigh County | $38,667 |
| 8 | Oliver County | $38,375 |
| 9 | Morton County | $37,375 |
| 10 | Divide County | $37,132 |
| 11 | Steele County | $36,724 |
| 12 | Renville County | $36,593 |
| 13 | McHenry County | $36,051 |
| 14 | Mercer County | $35,984 |
| 15 | Cavalier County | $35,731 |
| 16 | Ward County | $35,354 |
| 17 | Foster County | $35,103 |
| 18 | LaMoure County | $34,795 |
| 19 | Bowman County | $34,346 |
| 20 | Mountrail County | $34,332 |
| 21 | McLean County | $34,085 |
| 22 | Wells County | $33,533 |
| 23 | Cass County | $33,406 |
| 24 | Ransom County | $33,031 |
| 25 | Slope County | $32,750 |
| 26 | Towner County | $32,625 |
| 27 | Barnes County | $32,548 |
| 28 | Dunn County | $32,318 |
| 29 | Traill County | $32,270 |
| 30 | Pembina County | $32,243 |
| 31 | Stutsman County | $31,763 |
| 32 | Eddy County | $31,702 |
| 33 | Bottineau County | $31,678 |
| 34 | Walsh County | $31,530 |
| 35 | Dickey County | $31,354 |
| 36 | Kidder County | $31,201 |
| 37 | Richland County | $30,752 |
| 38 | Adams County | $30,711 |
| 39 | Golden Valley County | $30,442 |
| 40 | Nelson County | $30,311 |
| 41 | Logan County | $30,293 |
| 42 | Griggs County | $30,269 |
| 43 | McIntosh County | $30,124 |
| 44 | Ramsey County | $29,917 |
| 45 | Grant County | $29,745 |
| 46 | Sheridan County | $29,391 |
| 47 | Grand Forks County | $28,550 |
| 48 | Hettinger County | $28,333 |
| 49 | Emmons County | $28,038 |
| 50 | Rolette County | $26,859 |
| 51 | Pierce County | $26,187 |
| 52 | Benson County | $25,239 |
| 53 | Sioux County | $21,894 |
* All values are inflation-adjusted
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