Mission is a city in Johnson County, Kansas, United States.The city is a first-tier suburb in the Kansas City Metro. Mission absorbed the neighboring city of Countryside. The City of Mission offers several assistance programs to help residents maintain the exteriors of their homes. These programs include Mission Possible, an effort to help elderly and disabled individuals remove dilapidated structures, physical barriers, and make basic repairs to their homes and property. The city also provides free paint and primer to low income residents to maintain the aesthetics of their homes.