Natomas is a community in northwestern Sacramento California. It is the last area of Sacramento that has not been fully developed and has seen major residential development in the 1990s and 2000s. Major growth has been mostly due to Sleep Train Arena[citation needed] home court to the Sacramento Kings and now disbanded Monarchs and disbanded Sacramento Knights located in Natomas. Natomas is generally defined as south of the Sacramento County line north of the Garden Highway and the American River west of the Natomas East Main Drain and east of the Sacramento River. The neighborhood school district is Natomas Unified School District.