Download the list of Companies in Mississippi. Smartscrapers provides an accurate directory and the latest data on the number of Companies in Mississippi There are 15844 Companies in Mississippi as of October 15, 2025; which is an 0.00% increase from 2023. Of these locations, 14018 Companies which is 88.48% of all Companies in Mississippi are single-owner operations, while the remaining 1826 which is 11.52% are part of larger brands. The top three cities with the most Companies are Jackson with 1484 Companies, Gulfport with 433 Companies, Hattiesburg with 337 Companies. Average age of Companies in Mississippi is 4 years .