South Muddy is located in Jasper County, Illinois. South Muddy has a 2025 population of 307 . South Muddy is currently declining at a rate of -1.6% annually and its population has decreased by -3.76% since the most recent census, which recorded a population of 319 in 2020.
The average household income in South Muddy is $134,066 with a poverty rate of 7.06%. The median age in South Muddy is 43.2 years: 40.9 years for males, and 43.8 years for females. For every 100 females there are 97.8 males.
Data after 2023 is projected based on recent change
The racial composition of South Muddy includes 88.74% White, and smaller percentages for Native Hawaiian or Pacific Islander and multiracial populations.
White (88.74%)
Two or more races (10.6%)
Native Hawaiian or Pacific Islander (0.66%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 402 | 88.74% |
| Two or more races | 48 | 10.6% |
| Native Hawaiian or Pacific Islander | 3 | 0.66% |
Married
Widowed
Divorced
Separated
Never Married
South Muddy's average per capita income is $83,368. Household income levels show a median of $135,313. The poverty rate stands at 7.06%.
Name | Median | Mean |
|---|---|---|
| Married Families | $150,972 | - |
| Families | $147,500 | $174,702 |
| Households | $135,313 | $134,066 |
| Non Families | - | $67,570 |
Average Income
Median Household Income
Poverty Rate