| Place Name | Monrovia |
| Place Type | City |
| ZIP Code(s) | 91016 |
| County | Los Angeles County |
| Area Code(s) | 626 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 36,687 |
| Population Growth Rate (2010-19) | 3.66% |
| Majority Ethnicity | White 44.37% |
| Metro/Micro Stats Area | Los Angeles-Long Beach-Anaheim, CA |
| US Congressional District(s) | California 27thCalifornia 32nd |
| State Assembly Districts | 41 |
| State Senate Districts | 25 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 44.37% |
| African American | 4.43% |
| Hispanic | 0.55% |
| Asian | 12.49% |
| Native American | 0.69% |
| Hawaiin/Pacific Islander | 37.46% |