Last official estimated population of Cass County was 52,197 (year 2014)[1]. This was 0.016% of total US population and 0.5% of total Michigan state population. Area of Cass County is 508.3 mi² (=1316.5 km²), in this year population density was 102.69 p/mi². If population growth rate would be same as in period 2010-2014 (-0.05%/yr), Cass County population in 2026 would be 51,910 [0].
Historical population of Cass County for period 1830-2014 [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

[1830-1840] +20.04 %/yr
[1840-1850] +6.69 %/yr
[1850-1860] +4.97 %/yr
[1860-1870] +1.76 %/yr
[1870-1880] +0.43 %/yr
[1880-1890] -0.49 %/yr
[1890-1900] -0.04 %/yr
[1900-1910] -0.12 %/yr
[1910-1920] -0.11 %/yr
[1920-1930] +0.24 %/yr
[1930-1940] +0.48 %/yr
[1940-1950] +2.55 %/yr
[1950-1960] +2.74 %/yr
[1960-1970] +1.61 %/yr
[1970-1980] +1.34 %/yr
[1980-1990] -0 %/yr
[1990-2000] +0.32 %/yr
[2000-2005] +0.49 %/yr
[2005-2010] -0.02 %/yr
[2010-2014] -0.05 %/yr
Looking for settlements in Cass County? Visit this page: Settlements in Cass County, MI
Population of Cass County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1278 | 1105 | 2,383 |
| 5 to 9 | 1563 | 1484 | 3,047 |
| 10 to 14 | 1715 | 1692 | 3,407 |
| 15 to 19 | 1765 | 1605 | 3,370 |
| 20 to 24 | 1498 | 1408 | 2,906 |
| 25 to 29 | 1249 | 1184 | 2,433 |
| 30 to 34 | 1320 | 1334 | 2,654 |
| 35 to 39 | 1319 | 1283 | 2,602 |
| 40 to 44 | 1638 | 1623 | 3,261 |
| 45 to 49 | 1761 | 1749 | 3,510 |
| 50 to 54 | 2031 | 1976 | 4,007 |
| 55 to 59 | 2056 | 2043 | 4,099 |
| 60 to 64 | 1964 | 1958 | 3,922 |
| 65 to 69 | 1736 | 1839 | 3,575 |
| 70 to 74 | 1286 | 1373 | 2,659 |
| 75 to 79 | 795 | 844 | 1,639 |
| 80 to 84 | 466 | 593 | 1,059 |
| 85+ | 384 | 691 | 1,075 |
Cass 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 | 24815 | 24993 | 49,808 |
| WAC | 23835 | 23880 | 47,715 |
| WA | 23035 | 23218 | 46,253 |
| NHWAC | 22942 | 23171 | 46,113 |
| NHWA | 22182 | 22539 | 44,721 |
| BAC | 1913 | 1730 | 3,643 |
| NHBAC | 1842 | 1678 | 3,520 |
| BA | 1443 | 1332 | 2,775 |
| NHBA | 1400 | 1296 | 2,696 |
| H | 1009 | 791 | 1,800 |
| HWAC | 893 | 709 | 1,602 |
| TOM | 836 | 705 | 1,541 |
| HWA | 853 | 679 | 1,532 |
| NHTOM | 792 | 671 | 1,463 |
| IAC | 618 | 566 | 1,184 |
| NHIAC | 545 | 524 | 1,069 |
| IA | 313 | 295 | 608 |
| AAC | 290 | 318 | 608 |
| NHAAC | 285 | 302 | 587 |
| NHIA | 258 | 263 | 521 |
| AA | 182 | 229 | 411 |
| NHAA | 179 | 221 | 400 |
| HBAC | 71 | 52 | 123 |
| HIAC | 73 | 42 | 115 |
| HIA | 55 | 32 | 87 |
| HBA | 43 | 36 | 79 |
| HTOM | 44 | 34 | 78 |
| NAC | 43 | 31 | 74 |
| NHNAC | 31 | 24 | 55 |
| HAAC | 5 | 16 | 21 |
| NA | 15 | 5 | 20 |
| HNAC | 12 | 7 | 19 |
| HNA | 11 | 2 | 13 |
| HAA | 3 | 8 | 11 |
| NHNA | 4 | 3 | 7 |
• St. Joseph County population
25.4 mi,
215°
• Kalamazoo County
33 mi,
46°
• Elkhart County
23 mi,
162°
• Berrien County
39.1 mi,
257°
• LaPorte County
46 mi,
236°
• Van Buren County
29.7 mi,
328°
• St. Joseph County
24.5 mi,
90°
• Noble County
46.5 mi,
139°
• Marshall County
43.2 mi,
198°
• LaGrange County
35.1 mi,
122°
[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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