Orange County has more than 3,700 tenants in class A office buildings. Nearly 30% of those tenants have one to four workers. About 16% have 20 to 49 employees. Thirty-two have 500 or more employees. Irvine has more class A office tenants than any OC city, with 1,392. Newport Beach is No. 2, with 644. Santa Ana is No. 3, with 293. Excluded in this data are figures for tenants in OC medical office buildings.

