Last official estimated population of Morrow County was 34,833 (year 2014)[1]. This was 0.011% of total US population and 0.3% of total Ohio state population. Area of Morrow County is 407.2 mi² (=1054.7 km²), in this year population density was 85.54 p/mi². If population growth rate would be same as in period 2010-2014 (+0%/yr), Morrow County population in 2026 would be 34,851 [0].
Historical population of Morrow 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] +0.08 %/yr
[1860-1870] -0.95 %/yr
[1870-1880] +0.26 %/yr
[1880-1890] -0.51 %/yr
[1890-1900] -0.13 %/yr
[1900-1910] -0.61 %/yr
[1910-1920] -0.77 %/yr
[1920-1930] -0.72 %/yr
[1930-1940] +0.77 %/yr
[1940-1950] +0.93 %/yr
[1950-1960] +1.23 %/yr
[1960-1970] +0.96 %/yr
[1970-1980] +2.18 %/yr
[1980-1990] +0.47 %/yr
[1990-2000] +1.32 %/yr
[2000-2005] +1.61 %/yr
[2005-2010] +0.32 %/yr
[2010-2014] +0 %/yr
Looking for settlements in Morrow County? Visit this page: Settlements in Morrow County, OH
Population of Morrow County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1057 | 972 | 2,029 |
| 5 to 9 | 1199 | 1108 | 2,307 |
| 10 to 14 | 1328 | 1271 | 2,599 |
| 15 to 19 | 1263 | 1075 | 2,338 |
| 20 to 24 | 1015 | 878 | 1,893 |
| 25 to 29 | 869 | 881 | 1,750 |
| 30 to 34 | 993 | 996 | 1,989 |
| 35 to 39 | 1064 | 1046 | 2,110 |
| 40 to 44 | 1226 | 1206 | 2,432 |
| 45 to 49 | 1206 | 1153 | 2,359 |
| 50 to 54 | 1381 | 1349 | 2,730 |
| 55 to 59 | 1389 | 1423 | 2,812 |
| 60 to 64 | 1137 | 1122 | 2,259 |
| 65 to 69 | 893 | 963 | 1,856 |
| 70 to 74 | 673 | 740 | 1,413 |
| 75 to 79 | 502 | 560 | 1,062 |
| 80 to 84 | 268 | 359 | 627 |
| 85+ | 202 | 385 | 587 |
Morrow 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 | 17431 | 17262 | 34,693 |
| NH | 17391 | 17272 | 34,663 |
| NHWAC | 17173 | 17061 | 34,234 |
| WA | 17177 | 17030 | 34,207 |
| NHWA | 16931 | 16843 | 33,774 |
| TOM | 264 | 240 | 504 |
| H | 274 | 215 | 489 |
| NHTOM | 251 | 226 | 477 |
| HWAC | 258 | 201 | 459 |
| HWA | 246 | 187 | 433 |
| BAC | 239 | 188 | 427 |
| NHBAC | 223 | 176 | 399 |
| IAC | 157 | 140 | 297 |
| NHIAC | 150 | 127 | 277 |
| BA | 134 | 89 | 223 |
| AAC | 92 | 131 | 223 |
| NHAAC | 88 | 126 | 214 |
| NHBA | 124 | 83 | 207 |
| AA | 50 | 96 | 146 |
| NHAA | 47 | 92 | 139 |
| IA | 32 | 23 | 55 |
| NHIA | 30 | 19 | 49 |
| NAC | 19 | 17 | 36 |
| NHNAC | 16 | 17 | 33 |
| HBAC | 16 | 12 | 28 |
| HTOM | 13 | 14 | 27 |
| HIAC | 7 | 13 | 20 |
| NHNA | 8 | 9 | 17 |
| NA | 8 | 9 | 17 |
| HBA | 10 | 6 | 16 |
| HAAC | 4 | 5 | 9 |
| HAA | 3 | 4 | 7 |
| HIA | 2 | 4 | 6 |
| HNAC | 3 | 0 | 3 |
| HNA | 0 | 0 | 0 |
• Franklin County population
39.9 mi,
196°
• Delaware County
20.3 mi,
212°
• Licking County
34.2 mi,
150°
• Richland County
21.8 mi,
37°
• Marion County
20 mi,
282°
• Knox County
21.4 mi,
113°
• Ashland County
35.3 mi,
51°
• Union County
33.9 mi,
242°
• Crawford County
23.3 mi,
343°
• Wyandot County
34.7 mi,
308°
[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 15 Ohio Notes
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