Morrison is a city located in Whiteside County Illinois. It is also the county seat of Whiteside County. With a 2020 population of 3,926, it is the 374th largest city in Illinois and the 5472nd largest city in the United States . Morrison is currently declining at a rate of -0.78% annually and its population has decreased by -6.26% since the most recent census, which recorded a population of 4,188 in 2010. Morrison reached it's highest population of 4,605 in 1980. Spanning over 3 miles, Morrison has a population density of 1,559 people per square mile.
The average household income in Morrison is $58,785 with a poverty rate of 7.95%. The median rental costs in recent years comes to $780 per month, and the median house value is $95,600. The median age in Morrison is 41.9 years, 40.4 years for males, and 45.4 years for females.