Vienna
- County:
- Clark County
- County Seat:
- No
- Area (mi²):
- 0.842
- State:
- South Dakota
Vienna is a town located in Clark County, South Dakota. Vienna has a 2026 population of 53. Vienna is currently growing at a rate of 3.92% annually and its population has increased by 6% since the most recent census, which recorded a population of 50 in 2020.
The median household income in Vienna is $43,125 with a poverty rate of 0%. The median age in Vienna is 34.8 years: 26.6 years for males, and 74.1 years for females. For every 100 females there are 226.7 males.