
Merrillville
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 33.219
- State:
- Indiana
Merrillville is a town located in Lake County, Indiana. Merrillville has a 2025 population of 36,273. Merrillville is currently declining at a rate of -0.1% annually and its population has decreased by -0.5% since the most recent census, which recorded a population of 36,457 in 2020.
The average household income in Merrillville is $82,083 with a poverty rate of 13.66%. The median age in Merrillville is 41.3 years: 38.2 years for males, and 44.3 years for females.