Washington township is located in Washington County, Kansas. Washington township has a 2026 population of 385. Washington township is currently declining at a rate of -0.26% annually and its population has decreased by -3.02% since the most recent census, which recorded a population of 397 in 2020.
The median household income in Washington township is $87,500 with a poverty rate of 22.31%. The median age in Washington township is 48.4 years: 50.8 years for males, and 38.4 years for females. For every 100 females there are 83.9 males.