Last official estimated population of Franklin County was 1,166,107 (year 2014)[1]. This was 0.366% of total US population and 10% of total Ohio state population. Area of Franklin County is 543.6 mi² (=1408 km²), in this year population density was 2,145.07 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Franklin County population in 2024 would be 1,172,867 [0].
Historical population of Franklin 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] +11.43 %/yr
[1820-1830] +3.66 %/yr
[1830-1840] +5.45 %/yr
[1840-1850] +5.53 %/yr
[1850-1860] +1.61 %/yr
[1860-1870] +2.27 %/yr
[1870-1880] +3.25 %/yr
[1880-1890] +3.64 %/yr
[1890-1900] +2.86 %/yr
[1900-1910] +3.03 %/yr
[1910-1920] +2.51 %/yr
[1920-1930] +2.43 %/yr
[1930-1940] +0.74 %/yr
[1940-1950] +2.62 %/yr
[1950-1960] +3.1 %/yr
[1960-1970] +2.01 %/yr
[1970-1980] +0.42 %/yr
[1980-1990] +1.01 %/yr
[1990-2000] +1.06 %/yr
[2000-2005] +0.68 %/yr
[2005-2010] +1.03 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Franklin County? Visit this page: Settlements in Franklin County, OH
Population of Franklin County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 45201 | 43565 | 88,766 |
| 5 to 9 | 41329 | 40141 | 81,470 |
| 10 to 14 | 39177 | 37671 | 76,848 |
| 15 to 19 | 40105 | 38551 | 78,656 |
| 20 to 24 | 45510 | 47173 | 92,683 |
| 25 to 29 | 58581 | 59881 | 118,462 |
| 30 to 34 | 49291 | 50286 | 99,577 |
| 35 to 39 | 41854 | 42283 | 84,137 |
| 40 to 44 | 39873 | 40366 | 80,239 |
| 45 to 49 | 37977 | 38562 | 76,539 |
| 50 to 54 | 39363 | 41595 | 80,958 |
| 55 to 59 | 36589 | 40142 | 76,731 |
| 60 to 64 | 29003 | 33556 | 62,559 |
| 65 to 69 | 21442 | 25896 | 47,338 |
| 70 to 74 | 13489 | 17495 | 30,984 |
| 75 to 79 | 9177 | 12965 | 22,142 |
| 80 to 84 | 6397 | 9586 | 15,983 |
| 85+ | 5659 | 11662 | 17,321 |
Franklin 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 | 567063 | 601418 | 1,168,481 |
| WAC | 438873 | 454041 | 892,914 |
| WA | 422807 | 437163 | 859,970 |
| NHWAC | 410774 | 428690 | 839,464 |
| NHWA | 396190 | 413203 | 809,393 |
| BAC | 141087 | 157267 | 298,354 |
| NHBAC | 136634 | 152879 | 289,513 |
| BA | 129264 | 144508 | 273,772 |
| NHBA | 125929 | 141226 | 267,155 |
| AAC | 32221 | 33073 | 65,294 |
| NHAAC | 31518 | 32392 | 63,910 |
| H | 32954 | 29958 | 62,912 |
| AA | 27723 | 28420 | 56,143 |
| NHAA | 27327 | 28042 | 55,369 |
| HWAC | 28099 | 25351 | 53,450 |
| HWA | 26617 | 23960 | 50,577 |
| TOM | 17786 | 18870 | 36,656 |
| NHTOM | 16128 | 17307 | 33,435 |
| IAC | 6574 | 7058 | 13,632 |
| NHIAC | 5041 | 5752 | 10,793 |
| HBAC | 4453 | 4388 | 8,841 |
| HBA | 3335 | 3282 | 6,617 |
| IA | 2062 | 1961 | 4,023 |
| HTOM | 1658 | 1563 | 3,221 |
| HIAC | 1533 | 1306 | 2,839 |
| NHIA | 1191 | 1284 | 2,475 |
| NAC | 899 | 1006 | 1,905 |
| NHNAC | 737 | 836 | 1,573 |
| HIA | 871 | 677 | 1,548 |
| HAAC | 703 | 681 | 1,384 |
| NA | 375 | 454 | 829 |
| HAA | 396 | 378 | 774 |
| NHNA | 298 | 356 | 654 |
| HNAC | 162 | 170 | 332 |
| HNA | 77 | 98 | 175 |
• Delaware County population
21.4 mi, 
359°
• Licking County
29.1 mi, 
72°
• Fairfield County
25.1 mi, 
126°
• Clark County
41.3 mi, 
264°
• Pickaway County
22.3 mi, 
186°
• Union County
29.5 mi, 
319°
• Madison County
21.5 mi, 256°
• Champaign County
41.8 mi, 
285°
• Morrow County
39.9 mi, 
16°
• Fayette County
37.5 mi, 
220°
[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
*Ross Ohio Notes
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