| Official Name: | Acorn, Arkansas |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Arkansas#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Arkansas |
| Subdivision Type2: | County |
| Subdivision Name2: | Polk |
| Population As Of: | 2020 |
| Population Total: | 376 |
| Population Density Km2: | auto |
| Population Density Sq Mi: | auto |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1076 |
| Postal Code Type: | ZIP code |
| Blank Name: | GNIS feature ID |
| Blank Info: | 2805613 |
Acorn, Arkansas is an unincorporated community and census-designated place (CDP) in Polk County, Arkansas, United States, approximately 6 miles north of Mena. The town is located at the junction of U.S. Route 59, U.S. Route 71 and U.S. Route 270 in the northern part of the county. Though Acorn is only a three-way junction, it marks the end of three separate U.S. highway concurrencies: U.S. 59 & 71 from Texarkana, U.S. 59 & 270 from Heavener, Oklahoma, and U.S. 71 & 270 from "Y" City.[1]
It was first listed as a CDP in the 2020 census with a population of 376.[2]
It is home to the Acorn branch of the Ouachita River School District, including Acorn Elementary School and Acorn High School.
The Ouachita River district was established by the merger of the Acorn School District and the Oden School District on July 1, 2004.[3]
| White alone (NH) | 320 | 85.11% | |
| Black or African American alone (NH) | 1 | 0.27% | |
| Native American or Alaska Native alone (NH) | 9 | 2.39% | |
| Asian alone (NH) | 0 | 0.00% | |
| Pacific Islander alone (NH) | 0 | 0.00% | |
| Some Other Race alone (NH) | 0 | 0.00% | |
| Mixed Race or Multi-Racial (NH) | 33 | 8.78% | |
| Hispanic or Latino (any race) | 13 | 3.46% | |
| Total | 376 | 100.00% |
While there is no transit service in Acorn, intercity bus service is provided by Jefferson Lines in nearby Mena.[5]