Salem is located in Marion County, Illinois. Salem has a 2025 population of 338 . It is also the county seat of Marion County . Salem is currently growing at a rate of 0.3% annually but its population has decreased by -0.59% since the most recent census, which recorded a population of 340 in 2020.
The average household income in Salem is $98,404 with a poverty rate of 32.25%. The median age in Salem is 34.9 years: 31.6 years for males, and 45.1 years for females. For every 100 females there are 163.9 males.
Data after 2023 is projected based on recent change
The racial composition of Salem includes 95.16% White, and smaller percentages for Two or more races, Asian, Black or African American and multiracial populations.
White (95.16%)
Two or more races (2.85%)
Asian (1.14%)
Black or African American (0.85%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 334 | 95.16% |
| Two or more races | 10 | 2.85% |
| Asian | 4 | 1.14% |
| Black or African American | 3 | 0.85% |
Married
Widowed
Divorced
Separated
Never Married
Salem's average per capita income is $47,083. Household income levels show a median of $58,542. The poverty rate stands at 32.25%.
Name | Median | Mean |
|---|---|---|
| Families | $133,654 | $132,932 |
| Married Families | $133,654 | - |
| Households | $58,542 | $98,404 |
| Non Families | $36,250 | $39,393 |
Average Income
Median Household Income
Poverty Rate