
Westport
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 0.235
- State:
- South Dakota
Westport is a town located in Brown County, South Dakota. Westport has a 2025 population of 84. Westport is currently declining at a rate of -1.18% annually and its population has decreased by -5.62% since the most recent census, which recorded a population of 89 in 2020.
The average household income in Westport is $66,269 with a poverty rate of 0%. The median age in Westport is 61.3 years: 58.8 years for males, and 63 years for females.