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 Moines–West 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.
| Ethnicity | Johnston | USA |
|---|---|---|
| White | 82.8% | 60.1% |
| African American | 4.9% | 12.2% |
| American Indian | 0% | 0.6% |
| Asian | 7% | 5.6% |
| Hawaiian | 0% | 0.2% |
| Multiracial | 2.1% | 2.8% |
| Hispanic | 3.3% | 18.2% |
| Other | 0% | 0.3% |
| HOUSEHOLD INCOME | Johnston | USA |
|---|---|---|
| Less than $10,000 | 0.8% | 5.8% |
| $10,000 to $14,999 | 2% | 4.1% |
| $15,000 to $24,999 | 3.4% | 8.5% |
| $25,000 to $34,999 | 4.8% | 8.6% |
| $35,000 to $49,999 | 11.9% | 12.0% |
| $50,000 to $74,999 | 13.4% | 17.2% |
| $75,000 to $99,999 | 16.1% | 12.8% |
| $100,000 to $149,999 | 20.6% | 15.6% |
| $150,000 to $199,999 | 10.2% | 7.1% |
| Education | Johnston | USA |
|---|---|---|
| < 9th Grade | 0% | 5.0% |
| 9-12th Grade | 1% | 7.0% |
| High School or GED | 17% | 27.0% |
| Other College | 18% | 20.0% |
| Associate's Degree | 11% | 9% |
| Bachelor's Degree | 34% | 20.0% |
| Master's Degree | 14% | 9.0% |
| Professional Degree | 3% | 2.0% |
| Doctorate Degree | 2% | 1.0% |