Valley township is located in Douglas County, South Dakota. Valley township has a 2026 population of 134. Valley township is currently declining at a rate of 0% annually and its population has increased by 1.52% since the most recent census, which recorded a population of 132 in 2020.
The median household income in Valley township is $51,442 with a poverty rate of 86.47%. The median age in Valley township is 12.1 years: 12.1 years for males, and 14 years for females. For every 100 females there are 155.8 males.