| Place Name | Duncan |
| Place Type | Town |
| ZIP Code(s) | 85534 |
| County | Greenlee County |
| Area Code(s) | 928 |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 696 |
| Population Growth Rate (2010-19) | -0.29% |
| Majority Ethnicity | White 72.35% |
| US Congressional District(s) | Arizona 1st |
| State House Districts | 14 |
| State Senate Districts | 14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 72.35% |
| African American | 0% |
| Hispanic | 0.33% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 27.31% |