There are 562 companies in major business sectors in Seal Beach. The sectors with the most businesses are retail, which has 158; personal and business services, which counts 114 companies; and finance, insurance and real estate, with 86. More than 10,000 employees work at the 562 businesses. 58% of the businesses have one to four employees, while 14.4% have five to nine employees. Only .3% employ 250 to 499 people; one has more than 500.

