|Motto: Where the Trails Divide|
Location of Gardner, Kansas
|• Mayor||Chris Morrow|
|• City Administrator||Cheryl Harrison-Lee|
|• Total||10.17 sq mi (26.34 km2)|
|• Land||10.12 sq mi (26.21 km2)|
|• Water||0.05 sq mi (0.13 km2)|
|Elevation||1,060 ft (323 m)|
|• Estimate (2012)||20,318|
|• Density||1,889.6/sq mi (729.6/km2)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|ZIP codes||66030-66031 |
|FIPS code||20-25425 |
|GNIS feature ID||0479553 |
Gardner was founded where the California Trail, Santa Fe Trail, and Oregon Trail divided, sending travelers due west over the mountains and through Colorado and Salt Lake City toward San Francisco, through Sante Fe and Albuquerque toward Los Angeles and San Diego, or the Oregon Trail, bearing due west for a few miles before it turned north toward the Kansas River valley.
Gardner was founded as a Free-Stater settlement in 1857. Settled primarily by emigrants from Massachusetts, it may have been named for Henry Gardner, then governor of Massachusetts. Four years after its establishment, it became the first community in Johnson County — and perhaps the first in the state — to experience an attack by Confederate forces.
The first post office in Gardner was established in 1858.
Gardner is located at  According to the United States Census Bureau, the city has a total area of 10.17 square miles (26.34 km2), of which 10.12 square miles (26.21 km2) is land and 0.05 square miles (0.13 km2) is water.(38.812367, -94.918621).
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Gardner has a humid subtropical climate, abbreviated "Cfa" on climate maps.
As of the census of 2010, there were 19,123 people, 6,644 households, and 4,938 families residing in the city. The population density was 1,889.6 inhabitants per square mile (729.6/km2). There were 7,300 housing units at an average density of 721.3 per square mile (278.5/km2). The racial makeup of the city was 89.7% White, 3.0% African American, 0.5% Native American, 1.9% Asian, 1.8% from other races, and 3.0% from two or more races. Hispanic or Latino of any race were 6.2% of the population.
There were 6,644 households of which 49.7% had children under the age of 18 living with them, 58.9% were married couples living together, 10.3% had a female householder with no husband present, 5.1% had a male householder with no wife present, and 25.7% were non-families. 20.1% of all households were made up of individuals and 5% had someone living alone who was 65 years of age or older. The average household size was 2.85 and the average family size was 3.31.
The median age in the city was 30 years. 33.2% of residents were under the age of 18; 6.6% were between the ages of 18 and 24; 37.7% were from 25 to 44; 17.1% were from 45 to 64; and 5.3% were 65 years of age or older. The gender makeup of the city was 49.9% male and 50.1% female.
As of the census of 2000, there were 9,396 people, 3,307 households, and 2,460 families residing in the city. The population density was 1,898.5 people per square mile (732.9/km²). There were 3,533 housing units at an average density of 713.8 per square mile (275.6/km²). The racial makeup of the city was 94.13% White, 1.21% African American, 0.49% Native American, 1.05% Asian, 0.01% Pacific Islander, 1.26% from other races, and 1.85% from two or more races. Hispanic or Latino of any race were 2.99% of the population. 26.8% were of German, 18.2% American, 11.5% Irish and 5.6% English ancestry according to Census 2000.
There were 3,307 households out of which 47.8% had children under the age of 18 living with them, 58.5% were married couples living together, 11.1% had a female householder with no husband present, and 25.6% were non-families. 19.5% of all households were made up of individuals and 5.6% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.23.
In the city the population was spread out with 33.1% under the age of 18, 8.4% from 18 to 24, 38.4% from 25 to 44, 13.7% from 45 to 64, and 6.4% who were 65 years of age or older. The median age was 29 years. For every 100 females there were 96.9 males. For every 100 females age 18 and over, there were 93.7 males.
As of 2000 the median income for a household in the city was $50,807, and the median income for a family was $54,554. Males had a median income of $37,438 versus $27,553 for females. The per capita income for the city was $20,434. About 5.3% of families and 6.0% of the population were below the poverty line, including 6.1% of those under age 18 and 9.2% of those age 65 or over.
The mayor of Gardner is Chris Morrow, who was sworn in on April 15, 2013. The city council is made up of five (5) at-large members. It currently has three elected members, Council President Kristina Harrison, Council Vice President Larry Fotovich, Steve Shute. In January 2012 Heath Freeman was appointed by Mayor Dave Drovetta to fill a council seat vacated by Brian Broxterman. In May 2013 Tory Roberts was appointed by Mayor Chris Morrow to fill the council seat vacated by Morrow due to his election to mayor.
Gardner is part of the USD 231 school district. Located in Gardner are five out of the six elementary schools (Edgerton Elementary is the only school in the district not located in Gardner). These include Gardner Elementary, Sunflower Elementary, Madison Elementary, Nike Elementary, Grand Star Elementary, and Moonlight Elementary. The district also has three middle schools, Wheatridge, Trail Ridge, and Pioneer Ridge, and one high school (Gardner-Edgerton High School) all located in Gardner. The school district is building a new elementary school that will be open during the 2013-2014 school year. 
The Johnson County Library maintains a branch in Gardner.
- Bubba Starling, 5th overall selection in the 2011 Major League Baseball draft by the Kansas City Royals.
- City of Gardner
- "US Gazetteer files 2010". United States Census Bureau. Retrieved 2012-07-06.
- "American FactFinder". United States Census Bureau. Retrieved 2012-07-06.
- "Population Estimates". United States Census Bureau. Retrieved 2013-05-29.
- United States Postal Service (2012). "USPS - Look Up a ZIP Code". Retrieved 2012-02-15.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "Geographic Names Information System". United States Geological Survey. Retrieved 2008-01-31.
- "2010 City Population and Housing Occupancy Status". U.S. Census Bureau. Retrieved March 6, 2011.
- Crease, Craig. "History of Gardner". City of Gardner.
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 134.
- Gardner History, Gardner Museum and Historical Society. Accessed 2009-09-23.
- "Kansas Post Offices, 1828-1961 (archived)". Kansas Historical Society. Retrieved 11 June 2014.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- Climate Summary for Gardner, Kansas
- USD 231 - About The District.
- Johnson County Library
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