Tetonka township is located in Spink County, South Dakota. Tetonka township has a 2026 population of 44. Tetonka township is currently growing at a rate of 2.33% annually and its population has increased by 2.33% since the most recent census, which recorded a population of 43 in 2020.
The median age in Tetonka township is 72.3 years: 0 years for males, and 72.6 years for females. For every 100 females there are 57.1 males.
Data after 2023 is projected based on recent change
Overall: 72.3 years
Female: 72.6 years
Male: 0 years
There are 22 adults, (14 of whom are seniors) in Tetonka township.
Female: 14 (63.6%)
Male: 8 (36.4%)
The racial composition of Tetonka township includes 100% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 22 | 100% |