Last official estimated population of Mason County was 28,725 (year 2014)[1]. This was 0.009% of total US population and 0.3% of total Michigan state population. Area of Mason County is 1,242.4 mi² (=3217.9 km²), in this year population density was 23.12 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Mason County population in 2026 would be 28,785 [0].
Historical population of Mason 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] +24.48 %/yr
[1860-1870] +14.66 %/yr
[1870-1880] +11.92 %/yr
[1880-1890] +4.99 %/yr
[1890-1900] +1.43 %/yr
[1900-1910] +1.46 %/yr
[1910-1920] -0.96 %/yr
[1920-1930] -0.56 %/yr
[1930-1940] +0.33 %/yr
[1940-1950] +0.55 %/yr
[1950-1960] +0.69 %/yr
[1960-1970] +0.31 %/yr
[1970-1980] +1.55 %/yr
[1980-1990] -0.32 %/yr
[1990-2000] +1.03 %/yr
[2000-2005] +0.33 %/yr
[2005-2010] -0.03 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Mason County? Visit this page: Settlements in Mason County, MI
Population of Mason County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 798 | 717 | 1,515 |
| 5 to 9 | 850 | 817 | 1,667 |
| 10 to 14 | 869 | 829 | 1,698 |
| 15 to 19 | 898 | 755 | 1,653 |
| 20 to 24 | 857 | 796 | 1,653 |
| 25 to 29 | 723 | 698 | 1,421 |
| 30 to 34 | 767 | 787 | 1,554 |
| 35 to 39 | 706 | 709 | 1,415 |
| 40 to 44 | 775 | 789 | 1,564 |
| 45 to 49 | 866 | 846 | 1,712 |
| 50 to 54 | 1014 | 1093 | 2,107 |
| 55 to 59 | 1202 | 1219 | 2,421 |
| 60 to 64 | 1154 | 1191 | 2,345 |
| 65 to 69 | 985 | 985 | 1,970 |
| 70 to 74 | 735 | 805 | 1,540 |
| 75 to 79 | 547 | 585 | 1,132 |
| 80 to 84 | 289 | 397 | 686 |
| 85+ | 256 | 515 | 771 |
Mason 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 | 13897 | 14164 | 28,061 |
| WA | 13654 | 13930 | 27,584 |
| NH | 13614 | 13893 | 27,507 |
| NHWAC | 13267 | 13575 | 26,842 |
| NHWA | 13046 | 13363 | 26,409 |
| H | 677 | 640 | 1,317 |
| HWAC | 630 | 589 | 1,219 |
| HWA | 608 | 567 | 1,175 |
| IAC | 277 | 291 | 568 |
| TOM | 256 | 246 | 502 |
| NHIAC | 233 | 244 | 477 |
| BAC | 260 | 200 | 460 |
| NHTOM | 233 | 223 | 456 |
| NHBAC | 236 | 173 | 409 |
| IA | 156 | 165 | 321 |
| NHIA | 127 | 134 | 261 |
| BA | 147 | 99 | 246 |
| AAC | 115 | 125 | 240 |
| NHAAC | 111 | 123 | 234 |
| NHBA | 132 | 82 | 214 |
| AA | 78 | 93 | 171 |
| NHAA | 76 | 91 | 167 |
| HIAC | 44 | 47 | 91 |
| HIA | 29 | 31 | 60 |
| HBAC | 24 | 27 | 51 |
| HTOM | 23 | 23 | 46 |
| HBA | 15 | 17 | 32 |
| NAC | 7 | 10 | 17 |
| NHNAC | 6 | 10 | 16 |
| HAAC | 4 | 2 | 6 |
| HAA | 2 | 2 | 4 |
| HNAC | 1 | 0 | 1 |
| NA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Muskegon County population
48.9 mi, 
180°
• Sheboygan County
51.8 mi, 
250°
• Ozaukee County
57.6 mi, 
220°
• Manitowoc County
28.9 mi, 
285°
• Newaygo County
56.5 mi, 
122°
• Oceana County
24.3 mi, 
186°
• Manistee County
25.5 mi, 
16°
• Kewaunee County
40.3 mi, 
329°
• Benzie County
46.8 mi, 15°
• Lake County
46.7 mi, 
90°
[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
*Ottawa Michigan Notes
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