| Place Name | Westfield |
| Place Type | City |
| ZIP Code(s) | 46074 |
| County | Hamilton County |
| Area Code(s) | 317,463 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 30,081 |
| Population Growth Rate (2010-19) | 54.35% |
| Majority Ethnicity | White 85.73% |
| Metro/Micro Stats Area | Indianapolis-Carmel-Anderson, IN |
| US Congressional District(s) | Indiana 5th |
| State House Districts | 24,32 |
| State Senate Districts | 20 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 85.73% |
| African American | 2.75% |
| Hispanic | 0.04% |
| Asian | 2.68% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 8.82% |