Demographics & Data


Johnston's current population is 24,064, according to the January 1, 2020, U.S. Census update. 

View demographic information (PDF) from the 2016 special census.

Click here to view Johnston's 2010 census profile (PDF).

In 2030, Johnston is expected to have a population of 27,135 people.

Median Household Income in 2018 = $94,539

Median Johnston Home Value in 2021 = $291,800

96.8% of adult residents are high school graduates or higher.

Current daily traffic numbers on Interstate 35/80 = 95,500 vehicles per day, according to the Iowa DOT

By 2030, daily traffic numbers on NW 86th Street = 44,200

By 2030, daily traffic numbers on Merle Hay Road = 32,500

View Johnston's most recent traffic counts.

View Johnston's 2021 Development Summary (PDF).

Click here to view a recent economic impact study on Camp Dodge.