Unfortunately, I am not a Kansas resident, but it would be nice to put a sticky at the top of this forum with honest-to-goodness city code verified communities that ban open carry, with maybe links to the actual code that bans open carry.
I just stress the actual code because I know in Oregon there is a lot of misconceptions about where open carry is actually banned or not. Heck, even in Washington with a rock-solid preemption statute people still claim certain cities have open carry bans!
Sorry I couldn't really help you.
According to this unofficial source, Topeka and Wichita are prohibited, with a quote of the Wichita code: