Last official estimated population of Madison County was 43,412 (year 2014)[1]. This was 0.014% of total US population and 0.4% of total Ohio state population. Area of Madison County is 466.6 mi² (=1208.6 km²), in this year population density was 93.03 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), Madison County population in 2024 would be 43,355 [0].
Historical population of Madison 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] +11.59 %/yr
[1820-1830] +2.58 %/yr
[1830-1840] +3.84 %/yr
[1840-1850] +1.05 %/yr
[1850-1860] +2.65 %/yr
[1860-1870] +1.85 %/yr
[1870-1880] +2.56 %/yr
[1880-1890] -0.04 %/yr
[1890-1900] +0.26 %/yr
[1900-1910] -0.34 %/yr
[1910-1920] -0.12 %/yr
[1920-1930] +0.3 %/yr
[1930-1940] +0.74 %/yr
[1940-1950] +0.22 %/yr
[1950-1960] +1.72 %/yr
[1960-1970] +0.68 %/yr
[1970-1980] +1.54 %/yr
[1980-1990] +1.17 %/yr
[1990-2000] +0.81 %/yr
[2000-2005] +0.53 %/yr
[2005-2010] +1.02 %/yr
[2010-2014] -0.01 %/yr
Looking for settlements in Madison County? Visit this page: Settlements in Madison County, OH
Population of Madison County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1206 | 1097 | 2,303 |
| 5 to 9 | 1283 | 1349 | 2,632 |
| 10 to 14 | 1376 | 1378 | 2,754 |
| 15 to 19 | 1469 | 1191 | 2,660 |
| 20 to 24 | 1600 | 1087 | 2,687 |
| 25 to 29 | 1702 | 1101 | 2,803 |
| 30 to 34 | 1880 | 1144 | 3,024 |
| 35 to 39 | 1897 | 1188 | 3,085 |
| 40 to 44 | 2051 | 1349 | 3,400 |
| 45 to 49 | 1900 | 1473 | 3,373 |
| 50 to 54 | 1905 | 1512 | 3,417 |
| 55 to 59 | 1664 | 1487 | 3,151 |
| 60 to 64 | 1235 | 1295 | 2,530 |
| 65 to 69 | 1031 | 1012 | 2,043 |
| 70 to 74 | 719 | 806 | 1,525 |
| 75 to 79 | 496 | 636 | 1,132 |
| 80 to 84 | 315 | 433 | 748 |
| 85+ | 219 | 432 | 651 |
Madison 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 | 23528 | 19649 | 43,177 |
| WAC | 21087 | 19306 | 40,393 |
| NHWAC | 20714 | 19014 | 39,728 |
| WA | 20740 | 18975 | 39,715 |
| NHWA | 20394 | 18693 | 39,087 |
| BAC | 2747 | 576 | 3,323 |
| NHBAC | 2714 | 553 | 3,267 |
| BA | 2540 | 364 | 2,904 |
| NHBA | 2520 | 347 | 2,867 |
| H | 420 | 321 | 741 |
| TOM | 362 | 350 | 712 |
| NHTOM | 332 | 340 | 672 |
| HWAC | 373 | 292 | 665 |
| HWA | 346 | 282 | 628 |
| AAC | 282 | 260 | 542 |
| NHAAC | 269 | 260 | 529 |
| AA | 226 | 216 | 442 |
| NHAA | 218 | 216 | 434 |
| IAC | 187 | 173 | 360 |
| NHIAC | 161 | 155 | 316 |
| IA | 73 | 60 | 133 |
| NHIA | 60 | 48 | 108 |
| HBAC | 33 | 23 | 56 |
| HIAC | 26 | 18 | 44 |
| HTOM | 30 | 10 | 40 |
| HBA | 20 | 17 | 37 |
| NAC | 18 | 18 | 36 |
| NHNAC | 12 | 18 | 30 |
| HIA | 13 | 12 | 25 |
| HAAC | 13 | 0 | 13 |
| NA | 7 | 5 | 12 |
| NHNA | 4 | 5 | 9 |
| HAA | 8 | 0 | 8 |
| HNAC | 6 | 0 | 6 |
| HNA | 3 | 0 | 3 |
• Franklin County population
21.5 mi, 
76°
• Delaware County
33.6 mi, 
38°
• Greene County
29.9 mi, 
241°
• Clark County
20.3 mi, 
273°
• Pickaway County
25.2 mi, 
132°
• Union County
27.6 mi, 
3°
• Logan County
39 mi, 
330°
• Clinton County
38.5 mi, 
212°
• Champaign County
25.3 mi, 
310°
• Fayette County
23.8 mi, 
187°
[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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