Merrillville is a city located in Lake County Indiana. With a 2020 population of 34,884, it is the 28th largest city in Indiana and the 1130th largest city in the United States . Merrillville is currently growing at a rate of 0.13% annually but its population has decreased by -1.03% since the most recent census, which recorded a population of 35,246 in 2010. Merrillville reached it's highest population of 35,466 in 2014. Spanning over 33 miles, Merrillville has a population density of 1,051 people per square mile.
The average household income in Merrillville is $70,715 with a poverty rate of 13.21%. The median rental costs in recent years comes to $1,082 per month, and the median house value is $136,100. The median age in Merrillville is 38.2 years, 37.1 years for males, and 39.8 years for females.