Walnut Grove township is located in Neosho County, Kansas. Walnut Grove township has a 2026 population of 310. Walnut Grove township is currently growing at a rate of 0.65% annually but its population has decreased by -3.13% since the most recent census, which recorded a population of 320 in 2020.
The median household income in Walnut Grove township is $114,583 with a poverty rate of 2.86%. The median age in Walnut Grove township is 45.5 years: 45.4 years for males, and 47.5 years for females. For every 100 females there are 147.1 males.