Johnston, Iowa

Johnston, Iowa
Johnston welcome sign
Motto: 
Thrive. Every Day.
Location of Johnston, Iowa
Coordinates: 41°41′28″N 93°43′25″W / 41.69111°N 93.72361°W / 41.69111; -93.72361
CountryUSA
StateIowa
CountyPolk
TownshipsWebster, Jefferson
IncorporatedSeptember 18, 1969
Government
  TypeMayor-council government
Area
  Total
20.88 sq mi (54.07 km2)
  Land19.39 sq mi (50.23 km2)
  Water1.48 sq mi (3.84 km2)
Elevation
824 ft (251 m)
Population
 (2020)
  Total
24,064
  Rank24th in Iowa
  Density1,240.92/sq mi (479.12/km2)
Time zoneUTC-6 (Central (CST))
  Summer (DST)UTC-5 (CDT)
ZIP code
50131
Area code515
FIPS code19-39765
GNIS feature ID2395474
Websitewww.cityofjohnston.com

Johnston is a city in Polk County, Iowa, United States. The population was 24,064 in the 2020 census, a large increase from the 8,649 population in 2000. It is part of the Des MoinesWest Des Moines Metropolitan Statistical Area.

Johnston is the location of the headquarters of Pioneer Hi-Bred Seeds, Iowa Public Television, and The Gardeners of America/Men's Garden Clubs of America. Also located here are the Camp Dodge Military Reservation as well as the Paul J. and Ida Trier House, a private residence designed by architect Frank Lloyd Wright, and the Des Moines Weather Forecast Office of the National Weather Service.