A profile of Arizona, site of a Republican presidential primary on Tuesday:

NUMBERS:

Population: 6.482 million (2011 estimate)

AGE:

Median age: 35.9

Percentage of population 65 and over: 13.8 percent

RACE:

57.8 percent white, 29.6 Hispanic or Latino origin, 4.6 American Indian, 4.1 percent black, 2.8 percent Asian

LANGUAGE:

Language other than English spoken at home: 27.1 percent

EDUCATION:

High school graduate or higher: 85 percent

Bachelor's degree or higher: 26.3 percent

MONEY:

Median household income: $50,448

People below poverty level: 15.3 percent

Housing units occupied by owners: 66 percent

Housing units occupied by renters: 34 percent

2008 PRESIDENTIAL RESULTS:

John McCain, 53.6; Barack Obama, 45.1 percent

REGISTERED VOTERS:

Total: 3,134,124

Republicans: 1,124,726

Independents: 1,030,643

Democrats: 951,359

ARIZONA QUICK FACTS:

_ The Grand Canyon State celebrated its centennial on Feb. 14. It was the 48th state overall and the last in the contiguous 48 states.

_ Arizona has three national parks: Grand Canyon, Petrified Forest and Saguaro.

_ The state's public higher education system includes three state universities _ the University of Arizona, Arizona State University and Northern Arizona _ and 21 community colleges.

_ Arizona's state quarter depicts the Grand Canyon and a saguaro cactus. The saguaro cactus blossom is the state flower and the cactus wren is the state bird.

_ There are 21 federally recognized Indian tribes in Arizona.

_ There's only one place in the United States where four states touch each other. The "Four Corners" states are Arizona, Colorado, New Mexico and Utah.

_ The economic mainstays in Arizona in the 1950s were described as the Five C's: copper, cattle, cotton, citrus and climate.

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Sources: 2010 and 2011 U.S. Census data, Arizona Secretary of State's Office, Navajo Nation, University of Arizona Economic Development and Research Program.