Irvine sits in central Orange County between the Santa Ana Mountains and the Pacific Coast, with neighborhoods stretching from the Great Park area north to Portola Springs and from Woodbridge east to Orchard Hills. The city's economy centers on the Irvine Business Complex and Irvine Spectrum, which house major employers in technology, healthcare, and finance, while the University of California, Irvine anchors the western edge of the city. The master-planned villages—each with their own parks, schools, and shopping centers—create distinct residential areas connected by the I-5 and I-405 corridors, with nearby communities including Tustin to the northwest, Lake Forest to the southeast, and Newport Beach just beyond the San Joaquin Hills.