Last official estimated population of Johnson County was 23,385 (year 2014)[1]. This was 0.007% of total US population and 0.5% of total Kentucky state population. Area of Johnson County is 264.1 mi² (=684.1 km²), in this year population density was 88.53 p/mi². If population growth rate would be same as in period 2010-2014 (+0.03%/yr), Johnson County population in 2024 would be 23,458 [0].
Historical population of Johnson County for period 1850-2014 [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
[1850-1860] +3.2 %/yr
[1860-1870] +3.51 %/yr
[1870-1880] +2.02 %/yr
[1880-1890] +1.88 %/yr
[1890-1900] +2.22 %/yr
[1900-1910] +2.45 %/yr
[1910-1920] +1.16 %/yr
[1920-1930] +1.59 %/yr
[1930-1940] +1.16 %/yr
[1940-1950] -0.77 %/yr
[1950-1960] -1.87 %/yr
[1960-1970] -1.18 %/yr
[1970-1980] +3.37 %/yr
[1980-1990] -0.5 %/yr
[1990-2000] +0.08 %/yr
[2000-2005] -0.09 %/yr
[2005-2010] +0.02 %/yr
[2010-2014] +0.03 %/yr
Looking for settlements in Johnson County? Visit this page: Settlements in Johnson County, KY
Population of Johnson County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 744 | 768 | 1,512 |
| 5 to 9 | 727 | 668 | 1,395 |
| 10 to 14 | 777 | 679 | 1,456 |
| 15 to 19 | 711 | 667 | 1,378 |
| 20 to 24 | 727 | 689 | 1,416 |
| 25 to 29 | 681 | 640 | 1,321 |
| 30 to 34 | 670 | 729 | 1,399 |
| 35 to 39 | 697 | 723 | 1,420 |
| 40 to 44 | 782 | 821 | 1,603 |
| 45 to 49 | 764 | 835 | 1,599 |
| 50 to 54 | 811 | 886 | 1,697 |
| 55 to 59 | 827 | 887 | 1,714 |
| 60 to 64 | 758 | 849 | 1,607 |
| 65 to 69 | 700 | 662 | 1,362 |
| 70 to 74 | 473 | 502 | 975 |
| 75 to 79 | 302 | 350 | 652 |
| 80 to 84 | 170 | 224 | 394 |
| 85+ | 113 | 249 | 362 |
Johnson 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 |
| NH | 11362 | 11747 | 23,109 |
| WAC | 11288 | 11711 | 22,999 |
| NHWAC | 11219 | 11639 | 22,858 |
| WA | 11193 | 11604 | 22,797 |
| NHWA | 11133 | 11541 | 22,674 |
| TOM | 100 | 110 | 210 |
| BAC | 107 | 86 | 193 |
| NHTOM | 91 | 101 | 192 |
| NHBAC | 104 | 80 | 184 |
| IAC | 75 | 80 | 155 |
| H | 72 | 81 | 153 |
| HWAC | 69 | 72 | 141 |
| NHIAC | 65 | 68 | 133 |
| AAC | 66 | 62 | 128 |
| NHAAC | 65 | 62 | 127 |
| HWA | 60 | 63 | 123 |
| BA | 68 | 39 | 107 |
| NHAA | 53 | 51 | 104 |
| AA | 53 | 51 | 104 |
| NHBA | 68 | 34 | 102 |
| IA | 20 | 19 | 39 |
| NHIA | 17 | 15 | 32 |
| HIAC | 10 | 12 | 22 |
| HTOM | 9 | 9 | 18 |
| NAC | 5 | 6 | 11 |
| NHNAC | 5 | 6 | 11 |
| HBAC | 3 | 6 | 9 |
| HIA | 3 | 4 | 7 |
| NA | 0 | 5 | 5 |
| NHNA | 0 | 5 | 5 |
| HBA | 0 | 5 | 5 |
| HAAC | 1 | 0 | 1 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Pike County population
34 mi, 
137°
• Wayne County
30.3 mi, 
47°
• Floyd County
20.6 mi, 
166°
• Carter County
33.9 mi, 
339°
• Lawrence County
16.4 mi, 
17°
• Breathitt County
34.2 mi, 
226°
• Morgan County
23.9 mi, 
282°
• Magoffin County
16.7 mi, 231°
• Martin County
18.1 mi, 
101°
• Elliott County
23.4 mi, 
321°
[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
See note 34 Kentucky Notes
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