The median income of Fond du Lac County residents was $32,247 per year, adjusted for inflation. It had 41,542 households with a population of 102,597.
The county with the highest median resident income in the state was Waukesha County with $41,242 per year after adjusting for inflation – $8,995 more than Fond du Lac County. It had 158,808 households with a population of 400,475.
The county with the lowest median resident income in the state was Ashland County with $23,772 per year after adjusting for inflation – $8,475 less than Fond du Lac County. It had 6,565 households with a population of 15,617.
Wisconsin counties by earnings per resident (2019)
| Rank | County | Earnings per resident |
|---|---|---|
| 1 | Waukesha County | $41,242 |
| 2 | St. Croix County | $41,079 |
| 3 | Ozaukee County | $40,734 |
| 4 | Washington County | $39,079 |
| 5 | Calumet County | $38,365 |
| 6 | Dane County | $38,191 |
| 7 | Columbia County | $36,664 |
| 8 | Iowa County | $35,190 |
| 9 | Outagamie County | $33,629 |
| 10 | Kewaunee County | $33,195 |
| 11 | Door County | $32,871 |
| 12 | Sheboygan County | $32,823 |
| 13 | Brown County | $32,799 |
| 14 | Green County | $32,730 |
| 15 | Fond du Lac County | $32,247 |
| 16 | Dodge County | $32,199 |
| 17 | Trempealeau County | $31,989 |
| 18 | Monroe County | $31,946 |
| 19 | Marathon County | $31,870 |
| 20 | Jefferson County | $31,785 |
| 21 | Oconto County | $31,619 |
| 22 | Polk County | $31,523 |
| 23 | Kenosha County | $31,510 |
| 24 | Pierce County | $31,494 |
| 25 | Lafayette County | $31,460 |
| 26 | Lincoln County | $31,364 |
| 27 | Racine County | $31,195 |
| 28 | Winnebago County | $31,111 |
| 29 | Wood County | $31,081 |
| 30 | Sauk County | $31,042 |
| 31 | Buffalo County | $30,910 |
| 32 | Manitowoc County | $30,838 |
| 33 | Waupaca County | $30,707 |
| 34 | Chippewa County | $30,668 |
| 35 | Taylor County | $30,638 |
| 36 | Rock County | $30,624 |
| 37 | Green Lake County | $30,362 |
| 38 | Milwaukee County | $30,129 |
| 39 | Douglas County | $29,967 |
| 40 | La Crosse County | $29,863 |
| 41 | Pepin County | $29,817 |
| 42 | Shawano County | $29,799 |
| 43 | Bayfield County | $29,710 |
| 44 | Walworth County | $29,626 |
| 45 | Richland County | $29,523 |
| 46 | Portage County | $29,393 |
| 47 | Clark County | $29,167 |
| 48 | Eau Claire County | $29,023 |
| 49 | Oneida County | $28,825 |
| 50 | Marquette County | $28,615 |
| 51 | Vernon County | $28,462 |
| 52 | Washburn County | $28,390 |
| 53 | Langlade County | $27,700 |
| 54 | Barron County | $27,608 |
| 55 | Crawford County | $27,605 |
| 56 | Juneau County | $27,577 |
| 57 | Jackson County | $27,439 |
| 58 | Burnett County | $27,403 |
| 59 | Waushara County | $27,300 |
| 60 | Florence County | $27,257 |
| 61 | Price County | $27,162 |
| 62 | Marinette County | $26,923 |
| 63 | Sawyer County | $26,906 |
| 64 | Vilas County | $26,808 |
| 65 | Rusk County | $26,765 |
| 66 | Grant County | $26,687 |
| 67 | Dunn County | $26,111 |
| 68 | Iron County | $25,505 |
| 69 | Forest County | $25,423 |
| 70 | Adams County | $24,940 |
| 71 | Menominee County | $23,783 |
| 72 | Ashland County | $23,772 |
* All values are inflation-adjusted
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