Osage is located in St. Clair County, Missouri. Osage has a 2025 population of 291. Osage is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in Osage is $85,902 with a poverty rate of 8.79%.The median age in Osage is 44 years: 32.8 years for males, and 45.9 years for females.
Data after 2023 is projected based on recent change
The racial composition of Osage includes 94.85% White, and smaller percentages for Native American and multiracial populations.
White (94.8%)
Two or more races (4.1%)
Native American (1.0%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 276 | 94.85% |
| Two or more races | 12 | 4.12% |
| Native American | 3 | 1.03% |
Married
Widowed
Divorced
Separated
Never Married
Osage's average per capita income is $27,143. Household income levels show a median of $71,250. The poverty rate stands at 8.79%.
Name | Median | Mean |
|---|---|---|
| Families | $115,515 | $106,549 |
| Married Families | $115,221 | - |
| Households | $71,250 | $85,902 |
| Non Families | $32,153 | $68,494 |
Average Income
Median Household Income
Poverty Rate