Monrovia is an unincorporated community in Atchison County, Kansas, USA. Monrovia is at 39°31′27″N 95°20′46″W / 39.52417°N 95.34611°W.
Monrovia was platted in 1856. This makes it one of the oldest towns in Atchison County. The community on the Missouri Pacific Railroad never did grow enough to meet its creators' expectations.
A post office was opened in Monrovia in 1857. It was used until it was discontinued in 1955.
39°31′27″N 95°20′46″W / 39.52417°N 95.34611°W