Union township is located in Sheridan County, Kansas. Union township has a 2026 population of 23. Union township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 23 in 2020.
The median age in Union township is 69.2 years: 0 years for males, and 0 years for females. For every 100 females there are 3600.0 males.