| Place Name | Merrillville |
| Place Type | Town |
| ZIP Code(s) | 46410 |
| County | Lake County |
| Area Code(s) | 219 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 35,201 |
| Population Growth Rate (2010-19) | 3.40% |
| Majority Ethnicity | African American 43.99% |
| Metro/Micro Stats Area | Chicago-Naperville-Elgin, IL-IN-WI |
| US Congressional District(s) | Indiana 1st |
| State House Districts | 14,19 |
| State Senate Districts | 2,3 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 39.13% |
| African American | 43.99% |
| Hispanic | 0.08% |
| Asian | 1.22% |
| Native American | 0.09% |
| Hawaiin/Pacific Islander | 15.48% |