The median income of Marion County residents was $24,478 per year, adjusted for inflation. It had 11,500 households with a population of 28,672.
The county with the highest median resident income in the state was Platte County with $38,927 per year after adjusting for inflation – $14,449 more than Marion County. It had 38,613 households with a population of 98,824.
The county with the lowest median resident income in the state was Mississippi County with $15,266 per year after adjusting for inflation – $9,212 less than Marion County. It had 5,040 households with a population of 13,748.
Top 100 counties by earnings per resident (2018)
| Rank | County | Earnings per resident |
|---|---|---|
| 1 | Platte County | $38,927 |
| 2 | St. Charles County | $37,581 |
| 3 | St. Louis County | $33,890 |
| 4 | Clay County | $33,862 |
| 5 | Cass County | $33,274 |
| 6 | Cole County | $32,457 |
| 7 | Jefferson County | $31,277 |
| 8 | Jackson County | $30,564 |
| 9 | Osage County | $30,191 |
| 10 | Andrew County | $30,021 |
| 11 | Lincoln County | $29,787 |
| 12 | Clinton County | $29,610 |
| 13 | Ray County | $29,450 |
| 14 | Warren County | $28,869 |
| 15 | Franklin County | $28,841 |
| 16 | Christian County | $28,826 |
| 17 | Lafayette County | $28,665 |
| 18 | Callaway County | $28,305 |
| 19 | Perry County | $28,143 |
| 20 | Moniteau County | $28,038 |
| 21 | Ralls County | $27,818 |
| 22 | Boone County | $27,588 |
| 23 | Atchison County | $27,294 |
| 24 | Ste. Genevieve County | $26,977 |
| 25 | Cooper County | $26,902 |
| 26 | Caldwell County | $26,618 |
| 27 | DeKalb County | $26,348 |
| 28 | Monroe County | $26,192 |
| 29 | Livingston County | $26,135 |
| 30 | Bates County | $26,122 |
| 31 | Gasconade County | $26,072 |
| 32 | Montgomery County | $26,006 |
| 33 | Buchanan County | $25,992 |
| 34 | Clark County | $25,912 |
| 35 | Cape Girardeau County | $25,863 |
| 36 | Daviess County | $25,842 |
| 37 | Holt County | $25,811 |
| 38 | Linn County | $25,797 |
| 39 | Newton County | $25,786 |
| 40 | Greene County | $25,624 |
| 41 | Howard County | $25,305 |
| 42 | Worth County | $25,197 |
| 43 | Jasper County | $25,176 |
| 44 | Maries County | $25,154 |
| 45 | Scotland County | $25,111 |
| 46 | Mercer County | $25,102 |
| 47 | Webster County | $24,961 |
| 48 | Saline County | $24,778 |
| 49 | Randolph County | $24,601 |
| 50 | Shelby County | $24,523 |
| 51 | Marion County | $24,478 |
| 52 | Sullivan County | $24,411 |
| 53 | Johnson County | $24,254 |
| 54 | McDonald County | $24,081 |
| 55 | Lewis County | $24,041 |
| 56 | Henry County | $23,949 |
| 57 | Lawrence County | $23,824 |
| 58 | Laclede County | $23,753 |
| 59 | Miller County | $23,715 |
| 60 | Chariton County | $23,699 |
| 61 | Gentry County | $23,608 |
| 62 | Vernon County | $23,512 |
| 63 | Pettis County | $23,369 |
| 64 | Camden County | $23,201 |
| 65 | Macon County | $23,124 |
| 66 | Harrison County | $23,089 |
| 67 | Phelps County | $23,062 |
| 68 | Grundy County | $23,044 |
| 69 | Audrain County | $22,807 |
| 70 | St. Francois County | $22,793 |
| 71 | Stone County | $22,757 |
| 72 | Putnam County | $22,688 |
| 73 | Madison County | $22,470 |
| 74 | Carroll County | $22,427 |
| 75 | Scott County | $22,397 |
| 76 | Taney County | $22,395 |
| 77 | Barton County | $22,362 |
| 78 | Polk County | $22,359 |
| 79 | Stoddard County | $22,318 |
| 80 | Pulaski County | $22,190 |
| 81 | Reynolds County | $22,182 |
| 82 | Barry County | $22,174 |
| 83 | Pike County | $22,162 |
| 84 | Dent County | $21,843 |
| 85 | Bollinger County | $21,727 |
| 86 | New Madrid County | $21,098 |
| 87 | Knox County | $21,042 |
| 88 | St. Clair County | $20,956 |
| 89 | Morgan County | $20,933 |
| 90 | Benton County | $20,827 |
| 91 | Texas County | $20,782 |
| 92 | Howell County | $20,772 |
| 93 | Oregon County | $20,689 |
| 94 | Crawford County | $20,603 |
| 95 | Butler County | $20,589 |
| 96 | Schuyler County | $20,542 |
| 97 | Cedar County | $20,389 |
| 98 | Dallas County | $20,197 |
| 99 | Dade County | $20,113 |
| 100 | Dunklin County | $20,027 |
* All values are inflation-adjusted
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