Union township is located in Butte County, South Dakota. Union township has a 2026 population of 21. Union township is currently declining at a rate of 0% annually and its population has increased by 10.53% since the most recent census, which recorded a population of 19 in 2020.
Data after 2023 is projected based on recent change
Overall: 0 years
Female: 0 years
Male: 0 years
There are 0 adults, (0 of whom are seniors) in Union township.
Female: 0 (NaN%)
Male: 0 (NaN%)