Monument township is located in Logan County, Kansas. Monument township has a 2026 population of 114. Monument township is currently declining at a rate of -0.87% annually and its population has decreased by -1.72% since the most recent census, which recorded a population of 116 in 2020.
The median age in Monument township is 33.2 years: 33.1 years for males, and 46.5 years for females. For every 100 females there are 115.6 males.