Southside is located in Kearny County, Kansas. Southside has a 2025 population of 253 . Southside is currently declining at a rate of 0% annually and its population has decreased by -3.44% since the most recent census, which recorded a population of 262 in 2020.
The median age in Southside is 36.3 years: 25.5 years for males, and 38.8 years for females. For every 100 females there are 122.1 males.
Data after 2023 is projected based on recent change
The racial composition of Southside includes 78.6% White, 3.69% Asian, and smaller percentages for Native American and multiracial populations.
White (78.6%)
Two or more races (16.61%)
Asian (3.69%)
Native American (1.11%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 213 | 78.6% |
| Two or more races | 45 | 16.61% |
| Asian | 10 | 3.69% |
| Native American | 3 | 1.11% |
Married
Widowed
Divorced
Separated
Never Married