Last official estimated population of Ohio County was 23,842 (year 2014)[1]. This was 0.007% of total US population and 0.5% of total Kentucky state population. Area of Ohio County is 596.2 mi² (=1544.2 km²), in this year population density was 39.99 p/mi². If population growth rate would be same as in period 2010-2014 (0%/yr), Ohio County population in 2026 would be 23,842 [0].
Historical population of Ohio County for period 1800-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1800-1810] +11.98 %/yr
[1810-1820] +0.23 %/yr
[1820-1830] +1.97 %/yr
[1830-1840] +3.41 %/yr
[1840-1850] +3.99 %/yr
[1850-1860] +2.28 %/yr
[1860-1870] +2.46 %/yr
[1870-1880] +2.37 %/yr
[1880-1890] +1.55 %/yr
[1890-1900] +1.75 %/yr
[1900-1910] +0.13 %/yr
[1910-1920] -0.43 %/yr
[1920-1930] -0.78 %/yr
[1930-1940] -0.02 %/yr
[1940-1950] -1.57 %/yr
[1950-1960] -1.61 %/yr
[1960-1970] +0.59 %/yr
[1970-1980] +1.48 %/yr
[1980-1990] -0.31 %/yr
[1990-2000] +0.83 %/yr
[2000-2005] +0.59 %/yr
[2005-2010] +0.19 %/yr
[2010-2014] 0 %/yr
Looking for settlements in Ohio County? Visit this page: Settlements in Ohio County, KY
Population of Ohio County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 778 | 764 | 1,542 |
| 5 to 9 | 882 | 859 | 1,741 |
| 10 to 14 | 895 | 736 | 1,631 |
| 15 to 19 | 763 | 688 | 1,451 |
| 20 to 24 | 710 | 652 | 1,362 |
| 25 to 29 | 670 | 709 | 1,379 |
| 30 to 34 | 722 | 711 | 1,433 |
| 35 to 39 | 762 | 736 | 1,498 |
| 40 to 44 | 760 | 762 | 1,522 |
| 45 to 49 | 717 | 753 | 1,470 |
| 50 to 54 | 842 | 859 | 1,701 |
| 55 to 59 | 822 | 863 | 1,685 |
| 60 to 64 | 760 | 751 | 1,511 |
| 65 to 69 | 660 | 684 | 1,344 |
| 70 to 74 | 530 | 523 | 1,053 |
| 75 to 79 | 344 | 379 | 723 |
| 80 to 84 | 210 | 258 | 468 |
| 85+ | 135 | 328 | 463 |
Ohio County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| WAC | 11756 | 11819 | 23,575 |
| WA | 11636 | 11717 | 23,353 |
| NH | 11549 | 11642 | 23,191 |
| NHWAC | 11383 | 11479 | 22,862 |
| NHWA | 11279 | 11385 | 22,664 |
| H | 413 | 373 | 786 |
| HWAC | 373 | 340 | 713 |
| HWA | 357 | 332 | 689 |
| BAC | 205 | 151 | 356 |
| NHBAC | 186 | 138 | 324 |
| BA | 140 | 109 | 249 |
| TOM | 122 | 104 | 226 |
| NHBA | 126 | 99 | 225 |
| NHTOM | 106 | 95 | 201 |
| IAC | 83 | 84 | 167 |
| NHIAC | 61 | 66 | 127 |
| AAC | 36 | 57 | 93 |
| NHAAC | 27 | 54 | 81 |
| IA | 35 | 35 | 70 |
| AA | 23 | 40 | 63 |
| NHAA | 17 | 37 | 54 |
| NHIA | 20 | 23 | 43 |
| HIAC | 22 | 18 | 40 |
| HBAC | 19 | 13 | 32 |
| HIA | 15 | 12 | 27 |
| HTOM | 16 | 9 | 25 |
| HBA | 14 | 10 | 24 |
| NAC | 8 | 13 | 21 |
| NA | 6 | 10 | 16 |
| HNAC | 6 | 8 | 14 |
| HAAC | 9 | 3 | 12 |
| HNA | 5 | 7 | 12 |
| HAA | 6 | 3 | 9 |
| NHNAC | 2 | 5 | 7 |
| NHNA | 1 | 3 | 4 |
• Daviess County population
22 mi, 
322°
• Hopkins County
40 mi, 
253°
• Muhlenberg County
24.2 mi, 
221°
• Grayson County
27.5 mi, 
92°
• Spencer County
37.8 mi, 
346°
• Breckinridge County
30.6 mi, 
47°
• Butler County
20.7 mi, 
154°
• Edmonson County
38.5 mi, 
116°
• McLean County
23.3 mi, 
278°
• Hancock County
25.4 mi, 
6°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
*Nelson Kentucky Notes
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