
Pierpont
- County:
- Day County
- County Seat:
- No
- Area (mi²):
- 0.152
- State:
- South Dakota
Pierpont is a town located in Day County, South Dakota. Pierpont has a 2025 population of 122. Pierpont is currently declining at a rate of -0.81% annually and its population has decreased by -3.17% since the most recent census, which recorded a population of 126 in 2020.
The average household income in Pierpont is $109,047 with a poverty rate of 10.3%. The median age in Pierpont is 39.5 years: 35.8 years for males, and 40.3 years for females.