Humboldt is a city located in Humboldt County Iowa. With a 2020 population of 4,573, it is the 91st largest city in Iowa and the 5015th largest city in the United States . Humboldt is currently declining at a rate of -0.15% annually and its population has decreased by -2.49% since the most recent census, which recorded a population of 4,690 in 2010. Humboldt reached it's highest population of in . Spanning over 5 miles, Humboldt has a population density of 990 people per square mile.
The average household income in Humboldt is $66,958 with a poverty rate of 12.62%. The median rental costs in recent years comes to $562 per month, and the median house value is $117,300. The median age in Humboldt is 45.5 years, 41.4 years for males, and 48.2 years for females.