| | West Branch township, MI | Cass City, MI | United States |
| Population | 2,582 | 2,342 | 329,725,481 |
| Female Population | 47.4% | 47.4% | 50.5% |
| Male Population | 52.6% | 52.7% | 49.5% |
| Median Age | 43.6 | 46.2 | 38.4 |
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| Population - 2010 | 2,589 | 2,423 | 309,327,143 |
| Population - 2000 | 2,628 | 2,643 | 285,036,114 |
| Population - 1990 | 2,294 | 2,276 | 251,960,433 |
| Pop. 2000 to Now | -3.9% | -14.0% | 15.6% |
| Pop. 1990 to Now | 10.1% | -0.1% | 30.8% |
| space4 | | | |
| Population Density | 75.9 | 1,326.9 | 93.4 |
| Land Area | 34.0 | 1.8 | 3,531,905.4 |
| Water Area | 0.6 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | West Branch township, MI | Cass City, MI | United States |
| Age 0 to 4 | 6.4% | 4.8% | 5.9% |
| Age 5 to 9 | 4.8% | 3.9% | 6.1% |
| Age 10 to 14 | 4.6% | 7.0% | 6.6% |
| Age 15 to 17 | 5.4% | 3.8% | 3.9% |
| Age 18 to 20 | 3.4% | 3.3% | 4.0% |
| Age 21 to 24 | 3.3% | 3.8% | 5.2% |
| Age 25 to 34 | 10.9% | 10.2% | 13.8% |
| Age 35 to 44 | 13.1% | 12.4% | 12.9% |
| Age 45 to 54 | 12.8% | 12.4% | 12.6% |
| Age 55 to 59 | 8.5% | 4.1% | 6.7% |
| Age 60 to 64 | 7.8% | 10.4% | 6.3% |
| Age 65 to 74 | 10.8% | 10.8% | 9.6% |
| Age 75 to 84 | 6.4% | 9.8% | 4.5% |
| Age 85 and over | 1.8% | 3.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | West Branch township, MI | Cass City, MI | United States |
| White | 90.6% | 88.8% | 59.4% |
| Black | 0.7% | 0.6% | 12.2% |
| Asian | 1.4% | 0.4% | 5.6% |
| Native American | 1.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.0% | 0.4% |
| Two or More Races | 2.0% | 2.3% | 3.2% |
| Hispanic | 4.4% | 6.8% | 18.4% |
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| Marriage & Family | | | |
| | West Branch township, MI | Cass City, MI | United States |
| Married Population | 58.0% | 54.2% | 49.8% |
| Currently Married | 58.0% | 53.1% | 48.0% |
| Married but Separated | 0.0% | 1.0% | 1.8% |
| Single Population | 42.0% | 45.8% | 50.2% |
| Never Married | 24.5% | 28.2% | 33.8% |
| Divorced | 10.7% | 11.3% | 10.8% |
| Widowed | 6.8% | 6.3% | 5.6% |
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| Household Size | 2.49 | 2.53 | 2.60 |
| Households | 1,035 | 885 | 124,010,992 |
| Family Households | 748 | 557 | 80,755,759 |
| Married couple, w/children | 28.1% | 28.0% | 30.5% |
| Married couple, no children | 45.2% | 51.9% | 42.9% |
| Non Family Households | 287 | 328 | 43,255,233 |
| Single householder, w/children | 15.5% | 9.0% | 15.8% |
| Single householder, no children | 11.2% | 11.1% | 10.8% |