Waterloo is a city located in Indiana. With a 2020 population of 2,277, it is the 184th largest city in Indiana and the 7148th largest city in the United States . Waterloo is currently growing at a rate of 0.40% annually and its population has increased by 1.56% since the most recent census, which recorded a population of 2,242 in 2010. Waterloo reached it's highest population of 2,277 in 2021. Spanning over 2 miles, Waterloo has a population density of 1,076 people per square mile.
The average household income in Waterloo is $54,773 with a poverty rate of 15.26%. The median rental costs in recent years comes to $665 per month, and the median house value is $78,900. The median age in Waterloo is 32.1 years, 28.8 years for males, and 34.3 years for females.