The median income of Mason County residents was $25,269 per year, adjusted for inflation. It had 12,115 households with a population of 28,884.
The county with the highest median resident income in the state was Oakland County with $37,764 per year after adjusting for inflation – $12,495 more than Mason County. It had 501,260 households with a population of 1,250,843.
The county with the lowest median resident income in the state was Lake County with $17,821 per year after adjusting for inflation – $7,448 less than Mason County. It had 4,517 households with a population of 11,763.
Michigan counties by earnings per resident (2018)
| Rank | County | Earnings per resident |
|---|---|---|
| 1 | Oakland County | $37,764 |
| 2 | Livingston County | $37,130 |
| 3 | Clinton County | $33,559 |
| 4 | Washtenaw County | $32,412 |
| 5 | Eaton County | $32,167 |
| 6 | Leelanau County | $31,171 |
| 7 | Macomb County | $30,849 |
| 8 | Monroe County | $30,722 |
| 9 | Barry County | $30,566 |
| 10 | Allegan County | $30,233 |
| 11 | Ottawa County | $29,568 |
| 12 | Kent County | $29,409 |
| 13 | Grand Traverse County | $29,346 |
| 14 | Midland County | $29,161 |
| 15 | Lapeer County | $28,536 |
| 16 | Shiawassee County | $28,152 |
| 17 | Emmet County | $28,147 |
| 18 | Cass County | $28,012 |
| 19 | Charlevoix County | $27,917 |
| 20 | Ionia County | $27,861 |
| 21 | St. Clair County | $27,389 |
| 22 | Lenawee County | $27,056 |
| 23 | St. Joseph County | $26,980 |
| 24 | Kalamazoo County | $26,911 |
| 25 | Keweenaw County | $26,903 |
| 26 | Benzie County | $26,776 |
| 27 | Dickinson County | $26,766 |
| 28 | Jackson County | $26,567 |
| 29 | Berrien County | $26,478 |
| 30 | Antrim County | $26,434 |
| 31 | Branch County | $26,432 |
| 32 | Bay County | $26,353 |
| 33 | Huron County | $26,284 |
| 34 | Van Buren County | $26,243 |
| 35 | Otsego County | $26,069 |
| 36 | Genesee County | $26,023 |
| 37 | Mackinac County | $25,547 |
| 38 | Hillsdale County | $25,527 |
| 39 | Menominee County | $25,507 |
| 40 | Calhoun County | $25,488 |
| 41 | Delta County | $25,468 |
| 42 | Wayne County | $25,416 |
| 43 | Muskegon County | $25,412 |
| 44 | Saginaw County | $25,278 |
| 45 | Mason County | $25,269 |
| 46 | Tuscola County | $25,222 |
| 47 | Marquette County | $24,786 |
| 48 | Ingham County | $24,689 |
| 49 | Kalkaska County | $24,606 |
| 50 | Gratiot County | $24,521 |
| 51 | Cheboygan County | $24,284 |
| 52 | Sanilac County | $24,239 |
| 53 | Montcalm County | $24,185 |
| 54 | Presque Isle County | $24,146 |
| 55 | Alpena County | $24,022 |
| 56 | Manistee County | $23,990 |
| 57 | Baraga County | $23,979 |
| 58 | Missaukee County | $23,818 |
| 59 | Wexford County | $23,603 |
| 60 | Newaygo County | $23,499 |
| 61 | Arenac County | $23,406 |
| 62 | Gladwin County | $23,377 |
| 63 | Crawford County | $23,244 |
| 64 | Alcona County | $23,241 |
| 65 | Oceana County | $23,133 |
| 66 | Iosco County | $23,107 |
| 67 | Iron County | $22,914 |
| 68 | Osceola County | $22,686 |
| 69 | Alger County | $22,658 |
| 70 | Ontonagon County | $22,329 |
| 71 | Oscoda County | $22,288 |
| 72 | Montmorency County | $22,236 |
| 73 | Chippewa County | $22,141 |
| 74 | Gogebic County | $21,857 |
| 75 | Schoolcraft County | $21,852 |
| 76 | Ogemaw County | $21,534 |
| 77 | Luce County | $21,244 |
| 78 | Roscommon County | $20,983 |
| 79 | Clare County | $20,787 |
| 80 | Mecosta County | $20,541 |
| 81 | Houghton County | $20,469 |
| 82 | Isabella County | $17,947 |
| 83 | Lake County | $17,821 |
* All values are inflation-adjusted
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