Founded on February 28, 1838, Poinsett County is one of 75 counties in the state of Arkansas. Historically, Poinsett County was formed from Greene and Lawrence counties. The city of Harrisburg is the county seat. With FIPS code of 111, Poinsett County has a population of 22,660 and area of 763.39 square miles (1,977 km2).
List of all cities in Poinsett County, AR alphabetically
| City/Town | Postal Code | Area Code |
| Fisher, AR | 72429 | 870 |
| Harrisburg, AR | 72432 | 870 |
| Lepanto, AR | 72354 | 870 |
| Marked Tree, AR | 72365 | 870 |
| Rivervale, AR | 72377 | 870 |
| Trumann, AR | 72472 | 870 |
| Tyronza, AR | 72386 | 870 |
| Waldenburg, AR | 72475 | 870 |
| Weiner, AR | 72479 | 870 |
Map of Cities in Poinsett County, AR
