Marrs township is located in Posey County, Indiana. Marrs township has a 2026 population of 5,389. Marrs township is currently growing at a rate of 0.17% annually but its population has decreased by -0.02% since the most recent census, which recorded a population of 5,390 in 2020.
The median household income in Marrs township is $103,750 with a poverty rate of 7.26%. The median age in Marrs township is 41.1 years: 40.6 years for males, and 41.4 years for females. For every 100 females there are 106.7 males.