Willmar is a city located in Kandiyohi County Minnesota. It is also the county seat of Kandiyohi County. With a 2020 population of 20,205, it is the 58th largest city in Minnesota and the 1835th largest city in the United States . Willmar is currently growing at a rate of 0.84% annually and its population has increased by 3.03% since the most recent census, which recorded a population of 19,610 in 2010. Willmar reached it's highest population of 20,205 in 2021. Spanning over 15 miles, Willmar has a population density of 1,448 people per square mile.
The average household income in Willmar is $61,183 with a poverty rate of 15.85%. The median rental costs in recent years comes to $785 per month, and the median house value is $133,000. The median age in Willmar is 33.7 years, 31.4 years for males, and 36.9 years for females.