| Place Name | Ajo |
| Place Type | Census Designated Place |
| ZIP Code(s) | 85321 |
| County | Pima County |
| Area Code(s) | 520 |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 3,416 |
| Population Growth Rate (2010-19) | -8.02% |
| Majority Ethnicity | White 58.13% |
| Metro/Micro Stats Area | Tucson, AZ |
| US Congressional District(s) | Arizona 3rd |
| State House Districts | 4 |
| State Senate Districts | 4 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 58.13% |
| African American | 0% |
| Hispanic | 4.82% |
| Asian | 0.48% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 36.57% |