How many cities are in Johnson County? Is it 15?

LINKS TO JoCo CITY WEBSITES: http://kansas.hometownlocator.com/ks/johnson

The above website contains a list including each of the 20 incorporated cities in Johnson County, KS. 

The Townships (or unincorporated areas) can be found on the following website: http://en.wikipedia.org/wiki/Johnson_County,_Kansas#cite_note-bocc.jocogov.org-12