| Place Name | Lavaca |
| Place Type | City |
| ZIP Code(s) | 72941 |
| County | Sebastian County |
| Area Code(s) | 479 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 2,185 |
| Population Growth Rate (2010-19) | 7.03% |
| Majority Ethnicity | White 96.45% |
| Metro/Micro Stats Area | Fort Smith, AR-OK |
| US Congressional District(s) | Arkansas 4th |
| State House Districts | 75 |
| State Senate Districts | 5 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.45% |
| African American | 0.51% |
| Hispanic | 0.3% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.73% |