As of 2021, 10 chickens (not roosters) can be kept in parts of Olathe (yellow on the planning map) based on
https://m.facebook.com/CityofOlatheKS/videos/how-many-chickens-can-be-kept-on-your-property-according-to-city-ordinancethis-w/1711565239040572/
With a $25 permit and some restrictions on...