Union township is located in Sherman County, Kansas. Union township has a 2026 population of 57. Union township is currently declining at a rate of 0% annually and its population has decreased by -1.72% since the most recent census, which recorded a population of 58 in 2020.
The median household income in Union township is $40,000 with a poverty rate of 0%. The median age in Union township is 9.9 years: 9.7 years for males, and 43.8 years for females. For every 100 females there are 341.2 males.