
Smithwick
- County:
- Fall River County
- County Seat:
- No
- Area (mi²):
- 1.933
- State:
- South Dakota
Smithwick is a CDP located in Fall River County, South Dakota. Smithwick has a 2025 population of 24. Smithwick is currently growing at a rate of 9.09% annually and its population has increased by 118.18% since the most recent census, which recorded a population of 11 in 2020.
The average household income in Smithwick is $76,933 with a poverty rate of 0%. The median age in Smithwick is 55.8 years: 56.4 years for males, and 55.3 years for females.