This MFI Report presents the evolution of Irvine with a focus on its function as a job center. Although Irvine is well-known as a planned community with villages allowing for a comfortable suburban lifestyle, it nonetheless functions as a large job center to a degree that might surprise many people. Since 1980, it has retained the highest jobs/workers ratio in the Southern California region while also experiencing the fastest job growth in professional service industries throughout the region, particularly in computing and engineering occupations. As a consequence, the city has a much higher composition of high income jobs compared to the region—about 70% to 90% more than the region overall—and therefore fewer low and average income jobs. We explore how Irvine has grown and transformed over the last 50 years with a focus on the number and types of jobs that are located in the city. We also describe where the workers in these jobs are coming from.