Greenbrier township is located in Greene County, Iowa Iowa. Unfortunately, the data for this location is currently limited or unavailable.
The median household income in Greenbrier township is $46,696 with a poverty rate of 54.77%. The median age in Greenbrier township is 44.3 years: 44.5 years for males, and 38.6 years for females. For every 100 females there are 201.5 males.