Casco is located in St. Clair County, Michigan. Casco has a 2025 population of 4,387 . Casco is currently growing at a rate of 1.39% annually and its population has increased by 9.18% since the most recent census, which recorded a population of 4,018 in 2020.
The average household income in Casco is $103,078 with a poverty rate of 5.84%. The median age in Casco is 39.6 years: 34.1 years for males, and 42.3 years for females. For every 100 females there are 129.4 males.
Data after 2023 is projected based on recent change
The racial composition of Casco includes 96.75% White, and smaller percentages for other race, Two or more races, Asian and multiracial populations.
White (96.75%)
Other race (1.78%)
Two or more races (1.23%)
Asian (0.25%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,866 | 96.75% |
| Other race | 71 | 1.78% |
| Two or more races | 49 | 1.23% |
| Asian | 10 | 0.25% |
Married
Widowed
Divorced
Separated
Never Married
Casco's average per capita income is $52,303. Household income levels show a median of $79,375. The poverty rate stands at 5.84%.
Name | Median | Mean |
|---|---|---|
| Married Families | $105,078 | - |
| Families | $81,500 | $111,118 |
| Households | $79,375 | $103,078 |
| Non Families | $34,375 | $64,844 |
Average Income
Median Household Income
Poverty Rate