Last official estimated population of Otsego County was 24,151 (year 2014)[1]. This was 0.008% of total US population and 0.2% of total Michigan state population. Area of Otsego County is 526.2 mi² (=1362.8 km²), in this year population density was 45.90 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), Otsego County population in 2026 would be 24,112 [0].
Historical population of Otsego County for period 1880-2014 [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

[1880-1890] +8.03 %/yr
[1890-1900] +3.75 %/yr
[1900-1910] +0.59 %/yr
[1910-1920] -0.81 %/yr
[1920-1930] -0.84 %/yr
[1930-1940] +0.48 %/yr
[1940-1950] +1 %/yr
[1950-1960] +1.6 %/yr
[1960-1970] +3.28 %/yr
[1970-1980] +3.7 %/yr
[1980-1990] +1.82 %/yr
[1990-2000] +2.64 %/yr
[2000-2005] +1.21 %/yr
[2005-2010] -0.48 %/yr
[2010-2014] -0.01 %/yr
Looking for settlements in Otsego County? Visit this page: Settlements in Otsego County, MI
Population of Otsego County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 681 | 616 | 1,297 |
| 5 to 9 | 687 | 702 | 1,389 |
| 10 to 14 | 781 | 723 | 1,504 |
| 15 to 19 | 748 | 750 | 1,498 |
| 20 to 24 | 711 | 688 | 1,399 |
| 25 to 29 | 607 | 626 | 1,233 |
| 30 to 34 | 595 | 600 | 1,195 |
| 35 to 39 | 594 | 616 | 1,210 |
| 40 to 44 | 684 | 731 | 1,415 |
| 45 to 49 | 850 | 847 | 1,697 |
| 50 to 54 | 945 | 933 | 1,878 |
| 55 to 59 | 991 | 960 | 1,951 |
| 60 to 64 | 861 | 887 | 1,748 |
| 65 to 69 | 786 | 788 | 1,574 |
| 70 to 74 | 521 | 620 | 1,141 |
| 75 to 79 | 419 | 444 | 863 |
| 80 to 84 | 261 | 320 | 581 |
| 85+ | 226 | 359 | 585 |
Otsego 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 | 11777 | 12009 | 23,786 |
| WAC | 11669 | 11966 | 23,635 |
| NHWAC | 11512 | 11780 | 23,292 |
| WA | 11476 | 11762 | 23,238 |
| NHWA | 11331 | 11584 | 22,915 |
| TOM | 205 | 211 | 416 |
| IAC | 219 | 193 | 412 |
| NHTOM | 191 | 202 | 393 |
| NHIAC | 205 | 179 | 384 |
| H | 171 | 201 | 372 |
| HWAC | 157 | 186 | 343 |
| HWA | 145 | 178 | 323 |
| BAC | 184 | 122 | 306 |
| NHBAC | 173 | 115 | 288 |
| AAC | 76 | 141 | 217 |
| NHAAC | 73 | 138 | 211 |
| IA | 117 | 81 | 198 |
| NHIA | 109 | 74 | 183 |
| AA | 46 | 105 | 151 |
| NHAA | 45 | 103 | 148 |
| BA | 97 | 48 | 145 |
| NHBA | 94 | 43 | 137 |
| HIAC | 14 | 14 | 28 |
| HTOM | 14 | 9 | 23 |
| NAC | 10 | 9 | 19 |
| HBAC | 11 | 7 | 18 |
| NHNAC | 9 | 9 | 18 |
| HIA | 8 | 7 | 15 |
| NA | 7 | 3 | 10 |
| NHNA | 7 | 3 | 10 |
| HBA | 3 | 5 | 8 |
| HAAC | 3 | 3 | 6 |
| HAA | 1 | 2 | 3 |
| HNAC | 1 | 0 | 1 |
| HNA | 0 | 0 | 0 |
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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
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