Joiner is a city located in the U.S. state of Arkansas. It is within Mississippi County and the birthplace of record company executive Al Bennett. It has a total land area of 0.3 square miles at 35°30′26″N 90°9′1″W. The elevation is 233 feet above sea level. As of the 2010 census data, it had a total population of 576. The population density was 848.87/sq mi. Estimated per capita income in 2015 was $9,969. It is using Zip code 72350.