Gardner is located in Johnson County. About 23,287 people live here (as of 2020). Between 2010 and 2020, the population grew from 19,123 to 23,287. The region is at 323 meters above sea level. The area covers about 26.5 square kilometers. There are about 729 streets in Gardner. The region was founded in 1857. The postal codes are 66030. The dialing code is 913. Gardner is city in Kansas, United States. Among other things, Gardner has restaurants, cafés, museums, banks, hairdressers and pharmacies. More information at
GardnerKansas.gov.