| Place Name | Diamond City |
| Place Type | City |
| ZIP Code(s) | 72644 |
| County | Boone County |
| Area Code(s) | 327,870 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 1,066 |
| Population Growth Rate (2010-19) | -3.20% |
| Majority Ethnicity | White 94.01% |
| Metro/Micro Stats Area | Harrison, AR |
| US Congressional District(s) | Arkansas 3rd |
| State House Districts | 99 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.01% |
| African American | 1.53% |
| Hispanic | 0.22% |
| Asian | 0.65% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.59% |