South Otter township is located in Macoupin County, Illinois. South Otter township has a 2026 population of 436. South Otter township is currently declining at a rate of -0.68% annually and its population has decreased by -3.54% since the most recent census, which recorded a population of 452 in 2020.
The median household income in South Otter township is $73,750 with a poverty rate of 4.82%. The median age in South Otter township is 49 years: 61 years for males, and 48.3 years for females. For every 100 females there are 115.8 males.
Data after 2023 is projected based on recent change
Overall: 49 years
Female: 48.3 years
Male: 61 years
There are 311 adults, (155 of whom are seniors) in South Otter township.
Female: 202 (46.3%)
Male: 234 (53.7%)
The racial composition of South Otter township includes 95.64% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 417 | 95.64% |
| Two or more races | 19 | 4.36% |
South Otter township 's average per capita income is $60,625. Household income levels show a median of $73,750. The poverty rate stands at 4.82%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $162,679 | - |
| Families | $116,875 | $117,956 |
| Households | $73,750 | $92,913 |
| Non Families | - | $41,157 |
Average Income
Median Household Income
Poverty Rate