| Place Name | Blue River Township (Johnson County) |
| Place Type | Township |
| ZIP Code(s) | 46124 46131 |
| County | Johnson County |
| Area Code(s) | 812,930,317,463 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 4,844 |
| Majority Ethnicity | White 98.22% |
| Metro/Micro Stats Area | Indianapolis-Carmel-Anderson, IN |
| US Congressional District(s) | Indiana 9th |
| State House Districts | 47 |
| State Senate Districts | 41 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.22% |
| African American | 0.23% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0.3% |
| Hawaiin/Pacific Islander | 1.25% |