Last official estimated population of Delta County was 37,061 (year 2014)[1]. This was 0.012% of total US population and 0.4% of total Michigan state population. Area of Delta County is 1,991.3 mi² (=5157.5 km²), in this year population density was 18.61 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), Delta County population in 2025 would be 37,039 [0].
Historical population of Delta County for period 1860-2014 [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
[1860-1870] +8.05 %/yr
[1870-1880] +10.36 %/yr
[1880-1890] +8.45 %/yr
[1890-1900] +4.53 %/yr
[1900-1910] +2.34 %/yr
[1910-1920] +0.26 %/yr
[1920-1930] +0.43 %/yr
[1930-1940] +0.53 %/yr
[1940-1950] -0.34 %/yr
[1950-1960] +0.41 %/yr
[1960-1970] +0.46 %/yr
[1970-1980] +0.81 %/yr
[1980-1990] -0.3 %/yr
[1990-2000] +0.2 %/yr
[2000-2005] -0.29 %/yr
[2005-2010] -0.49 %/yr
[2010-2014] -0.01 %/yr
Looking for settlements in Delta County? Visit this page: Settlements in Delta County, MI
Population of Delta County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 967 | 905 | 1,872 |
| 5 to 9 | 1023 | 975 | 1,998 |
| 10 to 14 | 1105 | 1060 | 2,165 |
| 15 to 19 | 1107 | 1004 | 2,111 |
| 20 to 24 | 1011 | 959 | 1,970 |
| 25 to 29 | 846 | 796 | 1,642 |
| 30 to 34 | 938 | 949 | 1,887 |
| 35 to 39 | 989 | 895 | 1,884 |
| 40 to 44 | 979 | 1021 | 2,000 |
| 45 to 49 | 1123 | 1115 | 2,238 |
| 50 to 54 | 1444 | 1410 | 2,854 |
| 55 to 59 | 1548 | 1585 | 3,133 |
| 60 to 64 | 1470 | 1529 | 2,999 |
| 65 to 69 | 1275 | 1197 | 2,472 |
| 70 to 74 | 858 | 916 | 1,774 |
| 75 to 79 | 647 | 728 | 1,375 |
| 80 to 84 | 438 | 637 | 1,075 |
| 85+ | 376 | 734 | 1,110 |
Delta 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 | 17945 | 18224 | 36,169 |
| WAC | 17542 | 17787 | 35,329 |
| NHWAC | 17367 | 17610 | 34,977 |
| WA | 17145 | 17423 | 34,568 |
| NHWA | 16989 | 17261 | 34,250 |
| IAC | 726 | 710 | 1,436 |
| NHIAC | 700 | 689 | 1,389 |
| IA | 459 | 454 | 913 |
| NHIA | 445 | 444 | 889 |
| TOM | 413 | 384 | 797 |
| NHTOM | 392 | 368 | 760 |
| H | 199 | 191 | 390 |
| HWAC | 175 | 177 | 352 |
| BAC | 169 | 159 | 328 |
| HWA | 156 | 162 | 318 |
| NHBAC | 153 | 149 | 302 |
| AAC | 118 | 137 | 255 |
| NHAAC | 115 | 136 | 251 |
| AA | 59 | 88 | 147 |
| NHAA | 58 | 88 | 146 |
| BA | 65 | 59 | 124 |
| NHBA | 58 | 56 | 114 |
| HIAC | 26 | 21 | 47 |
| HTOM | 21 | 16 | 37 |
| HBAC | 16 | 10 | 26 |
| HIA | 14 | 10 | 24 |
| NAC | 10 | 14 | 24 |
| NHNAC | 10 | 14 | 24 |
| HBA | 7 | 3 | 10 |
| NHNA | 3 | 7 | 10 |
| NA | 3 | 7 | 10 |
| HAAC | 3 | 1 | 4 |
| HAA | 1 | 0 | 1 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Marquette County population
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331°
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61.5 mi, 
238°
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48.5 mi, 
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• Menominee County
34 mi, 237°
• Leelanau County
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• Mackinac County
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• Schoolcraft County
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• Florence County
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273°
[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
*Mackinac Michigan Notes
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