Last official estimated population of Randolph County was 26,165 (year 2014)[1]. This was 0.008% of total US population and 0.4% of total Indiana state population. Area of Randolph County is 453.3 mi² (=1174.1 km²), in this year population density was 57.72 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), Randolph County population in 2026 would be 26,147 [0].
Historical population of Randolph County for period 1820-2014 [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

[1820-1830] +8.02 %/yr
[1830-1840] +10.57 %/yr
[1840-1850] +3.26 %/yr
[1850-1860] +2.58 %/yr
[1860-1870] +1.87 %/yr
[1870-1880] +1.46 %/yr
[1880-1890] +0.61 %/yr
[1890-1900] +0.2 %/yr
[1900-1910] +0.12 %/yr
[1910-1920] -0.91 %/yr
[1920-1930] -0.63 %/yr
[1930-1940] +0.74 %/yr
[1940-1950] +0.14 %/yr
[1950-1960] +0.47 %/yr
[1960-1970] +0.17 %/yr
[1970-1980] +0.37 %/yr
[1980-1990] -0.99 %/yr
[1990-2000] +0.1 %/yr
[2000-2005] -0.66 %/yr
[2005-2010] -0.26 %/yr
[2010-2014] -0.01 %/yr
Looking for settlements in Randolph County? Visit this page: Settlements in Randolph County, IN
Population of Randolph County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 733 | 761 | 1,494 |
| 5 to 9 | 803 | 777 | 1,580 |
| 10 to 14 | 893 | 858 | 1,751 |
| 15 to 19 | 899 | 827 | 1,726 |
| 20 to 24 | 708 | 690 | 1,398 |
| 25 to 29 | 642 | 618 | 1,260 |
| 30 to 34 | 642 | 683 | 1,325 |
| 35 to 39 | 731 | 778 | 1,509 |
| 40 to 44 | 829 | 770 | 1,599 |
| 45 to 49 | 811 | 785 | 1,596 |
| 50 to 54 | 968 | 957 | 1,925 |
| 55 to 59 | 924 | 913 | 1,837 |
| 60 to 64 | 812 | 860 | 1,672 |
| 65 to 69 | 677 | 725 | 1,402 |
| 70 to 74 | 546 | 626 | 1,172 |
| 75 to 79 | 398 | 451 | 849 |
| 80 to 84 | 241 | 350 | 591 |
| 85+ | 239 | 459 | 698 |
Randolph 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 | 12309 | 12706 | 25,015 |
| WA | 12169 | 12559 | 24,728 |
| NH | 12064 | 12510 | 24,574 |
| NHWAC | 11899 | 12347 | 24,246 |
| NHWA | 11771 | 12216 | 23,987 |
| H | 432 | 378 | 810 |
| HWAC | 410 | 359 | 769 |
| HWA | 398 | 343 | 741 |
| BAC | 179 | 143 | 322 |
| TOM | 146 | 153 | 299 |
| NHBAC | 165 | 127 | 292 |
| NHTOM | 132 | 137 | 269 |
| IAC | 88 | 109 | 197 |
| BA | 106 | 73 | 179 |
| NHIAC | 77 | 96 | 173 |
| NHBA | 97 | 63 | 160 |
| AAC | 56 | 79 | 135 |
| NHAAC | 46 | 73 | 119 |
| IA | 44 | 55 | 99 |
| NHIA | 38 | 50 | 88 |
| AA | 26 | 43 | 69 |
| NHAA | 21 | 39 | 60 |
| NAC | 19 | 17 | 36 |
| NHNAC | 16 | 16 | 32 |
| HBAC | 14 | 16 | 30 |
| HTOM | 14 | 16 | 30 |
| HIAC | 11 | 13 | 24 |
| HBA | 9 | 10 | 19 |
| HAAC | 10 | 6 | 16 |
| HIA | 6 | 5 | 11 |
| NHNA | 5 | 5 | 10 |
| NA | 5 | 5 | 10 |
| HAA | 5 | 4 | 9 |
| HNAC | 3 | 1 | 4 |
| HNA | 0 | 0 | 0 |
• Delaware County population
21.2 mi,
281°
• Wayne County
20.8 mi,
180°
• Darke County
20.4 mi,
96°
• Henry County
26.3 mi,
231°
• Preble County
35.1 mi,
146°
• Mercer County
32.3 mi,
37°
• Fayette County
37.5 mi,
194°
• Jay County
18.7 mi,
0°
• Blackford County
27.1 mi,
321°
• Union County
37.6 mi,
173°
[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
*Clark, Dearborn Indiana Notes
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