The median income of Preble County residents was $28,140 per year, adjusted for inflation. It had 16,090 households with a population of 41,207.
The county with the highest median resident income in the state was Delaware County with $45,772 per year after adjusting for inflation – $17,632 more than Preble County. It had 68,649 households with a population of 197,008.
The county with the lowest median resident income in the state was Athens County with $14,586 per year after adjusting for inflation – $13,554 less than Preble County. It had 22,620 households with a population of 65,936.
Ohio counties by earnings per resident (2018)
| Rank | County | Earnings per resident |
|---|---|---|
| 1 | Delaware County | $45,772 |
| 2 | Warren County | $39,957 |
| 3 | Union County | $36,871 |
| 4 | Geauga County | $36,478 |
| 5 | Medina County | $35,189 |
| 6 | Putnam County | $32,842 |
| 7 | Lake County | $32,527 |
| 8 | Clermont County | $31,799 |
| 9 | Greene County | $31,791 |
| 10 | Auglaize County | $31,549 |
| 11 | Franklin County | $31,512 |
| 12 | Fairfield County | $31,294 |
| 13 | Madison County | $31,154 |
| 14 | Butler County | $30,782 |
| 15 | Shelby County | $30,689 |
| 16 | Hamilton County | $30,663 |
| 17 | Henry County | $30,471 |
| 18 | Hancock County | $30,367 |
| 19 | Licking County | $30,353 |
| 20 | Wyandot County | $30,327 |
| 21 | Logan County | $30,324 |
| 22 | Ottawa County | $30,276 |
| 23 | Mercer County | $30,170 |
| 24 | Pickaway County | $30,060 |
| 25 | Miami County | $29,803 |
| 26 | Summit County | $29,671 |
| 27 | Defiance County | $29,422 |
| 28 | Erie County | $29,283 |
| 29 | Lorain County | $28,956 |
| 30 | Fulton County | $28,923 |
| 31 | Morrow County | $28,854 |
| 32 | Van Wert County | $28,758 |
| 33 | Champaign County | $28,753 |
| 34 | Preble County | $28,140 |
| 35 | Wood County | $27,935 |
| 36 | Cuyahoga County | $27,913 |
| 37 | Sandusky County | $27,576 |
| 38 | Carroll County | $27,530 |
| 39 | Montgomery County | $27,494 |
| 40 | Wayne County | $27,441 |
| 41 | Darke County | $27,372 |
| 42 | Brown County | $27,321 |
| 43 | Williams County | $27,165 |
| 44 | Clinton County | $27,132 |
| 45 | Stark County | $27,088 |
| 46 | Fayette County | $27,026 |
| 47 | Paulding County | $26,975 |
| 48 | Huron County | $26,915 |
| 49 | Portage County | $26,835 |
| 50 | Lucas County | $26,631 |
| 51 | Tuscarawas County | $26,450 |
| 52 | Holmes County | $26,435 |
| 53 | Ashland County | $26,276 |
| 54 | Trumbull County | $26,227 |
| 55 | Clark County | $26,128 |
| 56 | Knox County | $26,054 |
| 57 | Washington County | $26,012 |
| 58 | Ross County | $25,761 |
| 59 | Hocking County | $25,598 |
| 60 | Seneca County | $25,551 |
| 61 | Allen County | $25,394 |
| 62 | Crawford County | $25,215 |
| 63 | Mahoning County | $25,171 |
| 64 | Columbiana County | $24,979 |
| 65 | Guernsey County | $24,853 |
| 66 | Harrison County | $24,583 |
| 67 | Perry County | $24,527 |
| 68 | Richland County | $24,317 |
| 69 | Hardin County | $24,301 |
| 70 | Belmont County | $24,218 |
| 71 | Jefferson County | $24,159 |
| 72 | Ashtabula County | $24,131 |
| 73 | Muskingum County | $24,112 |
| 74 | Coshocton County | $23,947 |
| 75 | Jackson County | $23,904 |
| 76 | Lawrence County | $23,836 |
| 77 | Noble County | $23,767 |
| 78 | Gallia County | $23,182 |
| 79 | Monroe County | $23,132 |
| 80 | Pike County | $23,076 |
| 81 | Vinton County | $23,059 |
| 82 | Highland County | $22,817 |
| 83 | Scioto County | $22,414 |
| 84 | Meigs County | $22,376 |
| 85 | Marion County | $22,267 |
| 86 | Morgan County | $21,715 |
| 87 | Adams County | $19,875 |
| 88 | Athens County | $14,586 |
* All values are inflation-adjusted
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