In 2017, Johnston, IA had a population of 20.2k people with a median age of 40.7 and a median household income of $94,539. Between 2016 and 2017 the population of Johnston, IA grew from 19,491 to 20,172, a 3.49% increase and its median household income declined from $95,565 to $94,539, a -1.07% decrease.
The 5 largest ethnic groups in Johnston, IA are White (Non-Hispanic) (90.6%), Asian (Non-Hispanic) (4.45%), Black or African American (Non-Hispanic) (2.37%), Two or More Races (Non-Hispanic) (1.15%), and White (Hispanic) (1.02%). N/A% of the people in Johnston, IA speak a non-English language, and 95.3% are U.S. citizens.
The largest universities in Johnston, IA are La James International College-Johnston (54 degrees awarded in 2017).
The median property value in Johnston, IA is $248,100, and the homeownership rate is 72.8%. Most people in Johnston, IA commute by Drove Alone, and the average commute time is 19.4 minutes. The average car ownership in Johnston, IA is 2 cars per household.