|Trend: The populations of Iowa City and Johnson County have increased steadily since the 1970s. This trend is expected to continue in the future.|
|Note: A special census was conducted for Iowa City in 1996. Population projections were provided by the East Central Iowa Council of Governments and the Iowa City Department of Planning and Community Development.|
Trend: Iowa city and Johnson County have a significant percentage of their population in the 18 - 24 year old category. Iowa City and Johnson County also have a smaller proportion of their population in the 45 and over age groups. The chart below shows the actual population figures in 1990 for each age group in Johnson County and Iowa City.