Peoria, AZ

Peoria extends from an old agricultural town in the Salt River Valley to desert and reservoir country roughly 30 miles north. Its municipal limits cover about 176 square miles, so the setting changes substantially from one end to the other. Old Town sits near Grand and 83rd avenues in the south. The Bell Road corridor and P83 form a newer concentration of shopping, dining, sports, and entertainment several miles north, and development follows Lake Pleasant Parkway toward Loop 303 and the northern edge. Beyond those corridors, washes, mountain slopes, and Sonoran Desert separate subdivisions. Lake Pleasant gives the far north a shoreline and water-storage landscape far removed from the original street grid. The southern core began with irrigation and rail access.

ATTRUser:Ceemo / Public domain

Completion of the Arizona Canal in 1885 enabled farming on the desert plain, and settlers from the Midwest established the community in the late 1880s, naming it for Peoria, Illinois. Grand Avenue was laid out in 1887, and a Santa Fe rail spur arrived in the early 1890s to carry cotton and alfalfa. Peoria incorporated on June 7, 1954. Old Town retains several civic markers. The 1906 Central School now houses the Peoria Arizona Historical Society Museum, and Osuna Park occupies land in the original plat. The 1939 Works Progress Administration town hall and jail serve as another museum. The Peoria Center for the Performing Arts, opened in 2007, adds live theater to the same district. Baseball gives the Bell Road area a different calendar.

ATTRTony the Marine ( talk ) / CC BY-SA 3.0

Peoria Sports Complex opened in 1994 as Major League Baseball's first spring-training facility designed for two teams, the Seattle Mariners and San Diego Padres. It remains their Cactus League home under agreements through 2034 and hosts games and events beyond spring training. Restaurants, hotels, retail, and entertainment in P83 cluster around the stadium. Farther north, semiconductor manufacturing is beginning to reshape land near Loop 303. Amkor Technology broke ground in October 2025 on an advanced packaging and testing campus in the Peoria Innovation Core. In May 2026, the City Council approved sale of 67 adjoining acres, expanding the planned campus from 104 to 171 acres. Construction was active, but manufacturing operations and projected employment were still future conditions.

ATTRMarine 69-71 / CC BY-SA 4.0

New Waddell Dam created the northern landscape at its present scale. Completed in 1993 on the Agua Fria River, it enlarged Lake Pleasant to about 10,000 surface acres and made the reservoir part of the Central Arizona Project. Water levels usually rise through winter and spring, then decline as releases serve cities and irrigation, producing a shoreline that moves during the year. Lake Pleasant Regional Park encompasses roughly 23,000 acres around the reservoir, with marinas, boat launches, campgrounds, trails, fishing, and desert habitat. Nearly 30 miles separate its boat ramps from the canal-served fields around Old Town. Peoria began by moving water to farms; its northern edge now reaches a reservoir that stores water for a much larger region.