Marion is located in Williamson County, Illinois. Marion has a 2025 population of 210. It is also the county seat of Williamson County. Marion is currently declining at a rate of -0.94% annually and its population has decreased by -3.23% since the most recent census, which recorded a population of 217 in 2020.
The average household income in Marion is $82,005 with a poverty rate of 2.17%. The median age in Marion is 51.7 years: 54.6 years for males, and 51 years for females.
Data after 2023 is projected based on recent change
The racial composition of Marion includes 95.96% White, and smaller percentages for Asian and multiracial populations.
White (96.0%)
Two or more races (3.4%)
Asian (0.6%)
Race | Population | Percentage (of total) |
---|---|---|
White | 309 | 95.96% |
Two or more races | 11 | 3.42% |
Asian | 2 | 0.62% |
Married
Widowed
Divorced
Separated
Never Married
Marion's average per capita income is $44,167. Household income levels show a median of $86,250. The poverty rate stands at 2.17%.
Name | Median | Mean |
---|---|---|
Married Families | $115,703 | - |
Families | $115,273 | $100,167 |
Households | $86,250 | $82,005 |
Non Families | - | $51,239 |
Average Income
Median Household Income
Poverty Rate