Plymouth township is located in Russell County, Kansas. Plymouth township has a 2026 population of 224. Plymouth township is currently declining at a rate of -1.32% annually and its population has decreased by -1.32% since the most recent census, which recorded a population of 227 in 2020.
The median household income in Plymouth township is $98,750 with a poverty rate of 5%. The median age in Plymouth township is 65.8 years: 68.1 years for males, and 63 years for females. For every 100 females there are 141.0 males.