Marissa is a village located in St. Clair County, Illinois. Marissa has a 2026 population of 1,700. Marissa is currently declining at a rate of -1.22% annually and its population has decreased by -7% since the most recent census, which recorded a population of 1,828 in 2020.
The median household income in Marissa is $54,814 with a poverty rate of 12.81%. The median age in Marissa is 42.9 years: 49.2 years for males, and 38.4 years for females. For every 100 females there are 89.5 males.
Data after 2023 is projected based on recent change
Overall: 42.9 years
Female: 38.4 years
Male: 49.2 years
There are 1,010 adults, (255 of whom are seniors) in Marissa.
Female: 650 (52.8%)
Male: 582 (47.2%)
The racial composition of Marissa includes 84.66% White, and smaller percentages for Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 1,043 | 84.66% |
| Two or more races | 184 | 14.94% |
| Native American | 5 | 0.41% |
Marissa 's average per capita income is $45,455. Household income levels show a median of $54,814. The poverty rate stands at 12.81%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $88,417 | - |
| Families | $78,125 | $88,311 |
| Households | $54,814 | $75,503 |
| Non Families | $28,875 | $52,655 |
Average Income
Median Household Income
Poverty Rate