The median income of Columbia County residents was an inflation-adjusted $32,834 per year. Columbia County had 23,317 households in 2017, with a population of 56,790.
The county with the highest median resident income in the state was Waukesha County. Waukesha County's median income was $38,295 per year after adjusting for inflation – $5,461 more than Columbia County. It had 156,996 households in 2017 and a population of 396,731.
Menominee County had the lowest annual resident income among counties in Wisconsin, with a median income of only $21,854 per year. That was $10,980 less than the median income in Columbia County at the time. Menominee County had 1,354 households in 2017 and a population of 4,506.
The table below shows the state's counties ranked by median annual resident earnings in 2017.
| Rank | County | Earnings per resident ($$$) |
|---|---|---|
| 1 | Waukesha County | 38,295 |
| 2 | St. Croix County | 37,972 |
| 3 | Ozaukee County | 36,291 |
| 4 | Washington County | 35,704 |
| 5 | Calumet County | 35,658 |
| 6 | Dane County | 34,540 |
| 7 | Columbia County | 32,834 |
| 8 | Iowa County | 31,618 |
| 9 | Outagamie County | 31,592 |
| 10 | Green County | 31,198 |
| 11 | Door County | 30,840 |
| 12 | Kewaunee County | 30,631 |
| 13 | Brown County | 30,320 |
| 14 | Fond du Lac County | 30,188 |
| 15 | Racine County | 30,186 |
| 16 | Monroe County | 30,183 |
| 17 | Sheboygan County | 30,175 |
| 18 | Jefferson County | 29,736 |
| 19 | Marathon County | 29,692 |
| 20 | Pierce County | 29,613 |
| 21 | Lafayette County | 29,602 |
| 22 | Oconto County | 29,372 |
| 23 | Lincoln County | 29,305 |
| 24 | Trempealeau County | 29,304 |
| 25 | Winnebago County | 29,093 |
| 26 | Dodge County | 29,050 |
| 27 | Sauk County | 29,020 |
| 28 | Manitowoc County | 28,934 |
| 29 | Wood County | 28,719 |
| 30 | Buffalo County | 28,505 |
| 31 | Chippewa County | 28,498 |
| 32 | Kenosha County | 28,443 |
| 33 | Polk County | 28,257 |
| 34 | Taylor County | 28,231 |
| 35 | Rock County | 28,092 |
| 36 | Waupaca County | 28,006 |
| 37 | Green Lake County | 27,505 |
| 38 | Pepin County | 27,323 |
| 39 | Douglas County | 27,226 |
| 40 | Walworth County | 27,124 |
| 41 | Milwaukee County | 27,046 |
| 42 | Richland County | 27,025 |
| 43 | La Crosse County | 26,904 |
| 44 | Vernon County | 26,882 |
| 45 | Oneida County | 26,710 |
| 46 | Shawano County | 26,573 |
| 47 | Portage County | 26,502 |
| 48 | Bayfield County | 26,441 |
| 49 | Clark County | 26,422 |
| 50 | Jackson County | 26,419 |
| 51 | Washburn County | 26,224 |
| 52 | Barron County | 26,019 |
| 53 | Marquette County | 25,911 |
| 54 | Eau Claire County | 25,637 |
| 55 | Price County | 25,576 |
| 56 | Marinette County | 25,220 |
| 57 | Langlade County | 24,740 |
| 58 | Crawford County | 24,711 |
| 59 | Waushara County | 24,668 |
| 60 | Vilas County | 24,503 |
| 61 | Florence County | 24,475 |
| 62 | Rusk County | 24,368 |
| 63 | Dunn County | 24,291 |
| 64 | Forest County | 24,102 |
| 65 | Burnett County | 23,997 |
| 66 | Juneau County | 23,906 |
| 67 | Sawyer County | 23,841 |
| 68 | Grant County | 23,524 |
| 69 | Iron County | 23,390 |
| 70 | Adams County | 22,635 |
| 71 | Ashland County | 22,303 |
| 72 | Menominee County | 21,854 |
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