Chelsea is a town located in Faulk County, South Dakota. Chelsea has a 2026 population of 19. Chelsea is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 19 in 2020.
The median age in Chelsea is 52.1 years: 23.9 years for males, and 63.4 years for females. For every 100 females there are 369.2 males.
Data after 2023 is projected based on recent change
Overall: 52.1 years
Female: 63.4 years
Male: 23.9 years
There are 61 adults, (12 of whom are seniors) in Chelsea.
Female: 13 (21.3%)
Male: 48 (78.7%)
The racial composition of Chelsea includes 100% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 61 | 100% |