| | Casnovia, MI | Newaygo, MI | United States |
| Population | 343 | 2,350 | 329,725,481 |
| Female Population | 39.9% | 49.0% | 50.5% |
| Male Population | 60.1% | 51.0% | 49.5% |
| Median Age | 34.7 | 33.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 317 | 1,990 | 309,327,143 |
| Population - 2000 | 315 | 1,670 | 285,036,114 |
| Population - 1990 | 376 | 1,336 | 251,960,433 |
| Pop. 2000 to Now | 1.6% | 25.7% | 15.6% |
| Pop. 1990 to Now | -14.9% | 57.1% | 30.8% |
| space4 | | | |
| Population Density | 322.7 | 627.8 | 93.4 |
| Land Area | 1.1 | 3.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Casnovia, MI | Newaygo, MI | United States |
| Age 0 to 4 | 6.7% | 6.8% | 5.9% |
| Age 5 to 9 | 5.0% | 7.1% | 6.1% |
| Age 10 to 14 | 5.8% | 6.6% | 6.6% |
| Age 15 to 17 | 1.7% | 4.6% | 3.9% |
| Age 18 to 20 | 2.3% | 3.4% | 4.0% |
| Age 21 to 24 | 7.0% | 7.9% | 5.2% |
| Age 25 to 34 | 22.2% | 16.6% | 13.8% |
| Age 35 to 44 | 16.6% | 12.7% | 12.9% |
| Age 45 to 54 | 9.0% | 9.7% | 12.6% |
| Age 55 to 59 | 9.3% | 6.6% | 6.7% |
| Age 60 to 64 | 5.8% | 5.0% | 6.3% |
| Age 65 to 74 | 6.4% | 6.3% | 9.6% |
| Age 75 to 84 | 2.0% | 4.0% | 4.5% |
| Age 85 and over | 0.0% | 2.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Casnovia, MI | Newaygo, MI | United States |
| White | 67.9% | 90.4% | 59.4% |
| Black | 0.3% | 1.5% | 12.2% |
| Asian | 2.3% | 0.0% | 5.6% |
| Native American | 1.7% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 5.0% | 4.6% | 3.2% |
| Hispanic | 22.7% | 3.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Casnovia, MI | Newaygo, MI | United States |
| Married Population | 52.7% | 46.1% | 49.8% |
| Currently Married | 49.8% | 44.7% | 48.0% |
| Married but Separated | 2.8% | 1.4% | 1.8% |
| Single Population | 47.4% | 53.9% | 50.2% |
| Never Married | 34.3% | 33.9% | 33.8% |
| Divorced | 10.6% | 13.4% | 10.8% |
| Widowed | 2.5% | 6.5% | 5.6% |
| space5 | | | |
| Household Size | 2.98 | 2.50 | 2.60 |
| Households | 115 | 940 | 124,010,992 |
| Family Households | 87 | 592 | 80,755,759 |
| Married couple, w/children | 24.1% | 28.4% | 30.5% |
| Married couple, no children | 50.6% | 36.8% | 42.9% |
| Non Family Households | 28 | 348 | 43,255,233 |
| Single householder, w/children | 11.5% | 19.4% | 15.8% |
| Single householder, no children | 13.8% | 15.4% | 10.8% |