Warner
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 0.279
- State:
- South Dakota
Warner is a town located in Brown County, South Dakota. Warner has a 2026 population of 450. Warner is currently declining at a rate of -0.66% annually and its population has decreased by -4.86% since the most recent census, which recorded a population of 473 in 2020.
The median household income in Warner is $113,750 with a poverty rate of 0.39%. The median age in Warner is 34.4 years: 31.4 years for males, and 35.4 years for females. For every 100 females there are 103.2 males.