Tempe, also known as Hayden's Ferry during the territorial times of Arizona, is a city in Maricopa County, Arizona, United States, with the Census Bureau reporting a 2010 population of 161,719.
The Hohokam lived in this area and built canals to support their agriculture. They abandoned their settlements during the 15th century, with a few individuals and families remaining nearby.Fort McDowell was established approximately 25 mi (40 km) northeast of present downtown Tempe on the upper Salt River in 1865 allowing for new towns to be built farther down the Salt River. US military service members and Hispanic workers were hired to grow food and animal feed to supply the fort, and less than a year later, had set up small camps near the river that were the first permanent communities in the Valley after the fall of the Hohokam. (Phoenix was settled shortly afterward, by 1867-68.) The two settlements were 'Hayden's Ferry', named after a ferry service operated by Charles T. Hayden, and 'San Pablo', and were located west and east ofHayden Butte respectively. The ferry became the key river crossing in the area. The Tempe Irrigating Canal Company was soon established by William Kirkland and James McKinney to provide water for alfalfa, wheat, barley, oats, and cotton.The Maricopa and Phoenix Railroad, built in 1887, crossed the Salt River at Tempe, linking the town to the nation's growing transportation system. The Tempe Land and Improvement Company was formed to sell lots in the booming town. Tempe became an economic hub for the surrounding agricultural area. The city incorporated in 1894.