Tempe is a city in Maricopa County, Arizona, United States, with the Census Bureau reporting a 2020 population of 180,587. The city is named after the Vale of Tempe in Greece. Tempe is located in the East Valley section of metropolitan Phoenix; it is bordered by Phoenix and Guadalupe on the west, Scottsdale and the Salt River Pima–Maricopa Indian Community on the north, Chandler on the south, and Mesa on the east. Tempe is also the location of the main campus of Arizona State University.

The Phoenix Metropolitan Area consists of a valley that has multiple city regions in it. The East Valley is a multi-city region within the Phoenix Metropolitan Area of Arizona. East Valley is a loosely defined region, with differing definition of what constitutes it.