| Place Name | Lamar |
| Place Type | Census Designated Place |
| ZIP Code(s) | 38642 |
| County | Benton County |
| Area Code(s) | 662 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 0 |
| US Congressional District(s) | Mississippi 1st |
| State House Districts | 5 |
| State Senate Districts | 3 |