St. Marys is located in Adams County, Indiana. St. Marys has a 2025 population of 1,292 . St. Marys is currently growing at a rate of 0.16% annually and its population has increased by 2.22% since the most recent census, which recorded a population of 1,264 in 2020.
The average household income in St. Marys is $88,215 with a poverty rate of 1.38%. The median age in St. Marys is 42.3 years: 42.1 years for males, and 45.3 years for females. For every 100 females there are 94.6 males.
Data after 2023 is projected based on recent change
The racial composition of St. Marys includes 95.6% White, and smaller percentages for Two or more races, Native American, Asian and multiracial populations.
White (95.6%)
Two or more races (2.41%)
Native American (1.21%)
Asian (0.78%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,109 | 95.6% |
| Two or more races | 28 | 2.41% |
| Native American | 14 | 1.21% |
| Asian | 9 | 0.78% |
Married
Widowed
Divorced
Separated
Never Married
St. Marys' average per capita income is $48,987. Household income levels show a median of $77,443. The poverty rate stands at 1.38%.
Name | Median | Mean |
|---|---|---|
| Married Families | $99,310 | - |
| Families | $99,052 | $102,950 |
| Households | $77,443 | $88,215 |
| Non Families | $24,183 | $31,121 |
Average Income
Median Household Income
Poverty Rate