New Hartford is a city located in Butler County Iowa. With a 2020 population of 482, it is the 452nd largest city in Iowa and the 13477th largest city in the United States . New Hartford is currently declining at a rate of -0.62% annually and its population has decreased by -6.59% since the most recent census, which recorded a population of 516 in 2010. New Hartford reached it's highest population of in . Spanning over 1 miles, New Hartford has a population density of 776 people per square mile.
The average household income in New Hartford is $55,950 with a poverty rate of 9.39%. The median rental costs in recent years comes to $700 per month, and the median house value is $82,400. The median age in New Hartford is 33.1 years, 33.4 years for males, and 31.3 years for females.