Last official estimated population of Scioto County was 79,531 (year 2014)[1]. This was 0.025% of total US population and 0.7% of total Ohio state population. Area of Scioto County is 616.1 mi² (=1595.8 km²), in this year population density was 129.08 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Scioto County population in 2026 would be 79,627 [0].
Historical population of Scioto County for period 1810-2014 [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

[1810-1820] +5.4 %/yr
[1820-1830] +4.28 %/yr
[1830-1840] +2.5 %/yr
[1840-1850] +5.11 %/yr
[1850-1860] +2.8 %/yr
[1860-1870] +1.89 %/yr
[1870-1880] +1.35 %/yr
[1880-1890] +0.54 %/yr
[1890-1900] +1.48 %/yr
[1900-1910] +1.69 %/yr
[1910-1920] +2.63 %/yr
[1920-1930] +2.6 %/yr
[1930-1940] +0.64 %/yr
[1940-1950] -0.43 %/yr
[1950-1960] +0.16 %/yr
[1960-1970] -0.9 %/yr
[1970-1980] +0.95 %/yr
[1980-1990] -0.51 %/yr
[1990-2000] -0.14 %/yr
[2000-2005] -0.33 %/yr
[2005-2010] +0.4 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Scioto County? Visit this page: Settlements in Scioto County, OH
Population of Scioto County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2203 | 2190 | 4,393 |
| 5 to 9 | 2414 | 2327 | 4,741 |
| 10 to 14 | 2518 | 2322 | 4,840 |
| 15 to 19 | 2588 | 2430 | 5,018 |
| 20 to 24 | 2707 | 2442 | 5,149 |
| 25 to 29 | 2645 | 2305 | 4,950 |
| 30 to 34 | 2451 | 2285 | 4,736 |
| 35 to 39 | 2373 | 2314 | 4,687 |
| 40 to 44 | 2495 | 2502 | 4,997 |
| 45 to 49 | 2394 | 2499 | 4,893 |
| 50 to 54 | 2584 | 2749 | 5,333 |
| 55 to 59 | 2696 | 2940 | 5,636 |
| 60 to 64 | 2393 | 2518 | 4,911 |
| 65 to 69 | 1939 | 2115 | 4,054 |
| 70 to 74 | 1376 | 1682 | 3,058 |
| 75 to 79 | 1027 | 1428 | 2,455 |
| 80 to 84 | 690 | 1033 | 1,723 |
| 85+ | 552 | 1132 | 1,684 |
Scioto 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 | 37553 | 38751 | 76,304 |
| WAC | 36225 | 38166 | 74,391 |
| NHWAC | 35796 | 37744 | 73,540 |
| WA | 35594 | 37522 | 73,116 |
| NHWA | 35189 | 37127 | 72,316 |
| BAC | 1713 | 968 | 2,681 |
| NHBAC | 1666 | 934 | 2,600 |
| BA | 1407 | 648 | 2,055 |
| NHBA | 1378 | 634 | 2,012 |
| TOM | 662 | 673 | 1,335 |
| NHTOM | 632 | 644 | 1,276 |
| IAC | 556 | 520 | 1,076 |
| NHIAC | 516 | 485 | 1,001 |
| H | 492 | 462 | 954 |
| HWAC | 429 | 422 | 851 |
| HWA | 405 | 395 | 800 |
| AAC | 216 | 250 | 466 |
| NHAAC | 207 | 245 | 452 |
| IA | 226 | 188 | 414 |
| NHIA | 201 | 165 | 366 |
| AA | 151 | 177 | 328 |
| NHAA | 148 | 176 | 324 |
| HBAC | 47 | 34 | 81 |
| HIAC | 40 | 35 | 75 |
| HTOM | 30 | 29 | 59 |
| HIA | 25 | 23 | 48 |
| HBA | 29 | 14 | 43 |
| NHNAC | 23 | 17 | 40 |
| NAC | 23 | 17 | 40 |
| HAAC | 9 | 5 | 14 |
| NHNA | 5 | 5 | 10 |
| NA | 5 | 5 | 10 |
| HAA | 3 | 1 | 4 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Ross County population
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[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
*Adams, Washington Ohio Notes
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