Joiner is a city located in Mississippi County, in the state of Arkansas (AR), United States. Nestled in the West South Central division of the South region, it covers an area of 0.3 square miles (1.0 km²) and sits at an elevation of 231 ft. With a population of approximately 540 residents, Joiner offers a peaceful, rural atmosphere.
The town's population is composed of about 44.44% males and 55.56% females, and it has a population density of 862.07 people per square mile (718.95/km²). Joiner lies at a latitude of 35.51 and a longitude of -90.15, operating in the UTC-6.
Locals reflect a blend of American ancestry, with roots primarily in United States (11.5%), followed by English (9.6%), German (1.9%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 72350.