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Arizona Population Overview (2026 Projection)
Arizona is a state in the Western United States, bordered by Utah to the north, Colorado to the northeast, New Mexico to the east, Nevada and California to the west, and the Mexican states of Sonora and Baja California to the south and southwest. Arizona is the 14th most populous state in the United States and the 6th largest by land area.
According to the U.S. Census Bureau, Arizona recorded a population of 7,151,502 in the 2020 Census. The latest Census population estimate (July 1, 2024) places Arizona’s population at 7,582,384 (7.6 million), reflecting strong growth since 2020.
Based on continued domestic migration, job growth, and natural population increase, Arizona’s population is expected to keep rising steadily over the next few years.
👉 Projected Population of Arizona (2026): ~7.9 million
Arizona Population Growth (2010–2020)
Arizona has a population growth rate of 11.9% during 2010-2020. It has had a population increase of 759,485 since 2010.
Arizona Census Snapshot (2020)
| Indicators | Data |
| Total Population | 7,151,502 (7.1 million) |
| Median age | 37.1 years |
| Population Rank | 14th |
| Total Land Area | 113,990 sq mi (295,234 km2) |
| Area Rank | 6th |
| Population Density | 57/sq mi (22/km2) |
| Capital City | Phoenix |
| Largest City | Phoenix |
Source: US Census Bureau 2020
Arizona Historical Population
Arizona has experienced exceptional long-term population growth over the past century. In 1910, the state had just 204,000 residents, but by 2020 its population had risen to 7.15 million, an increase of nearly 7 million people. Growth was especially rapid during the mid-to-late 20th century, with several decades recording gains of over 40–70%, driven by migration, economic expansion, and urban development. While growth moderated between 2010 and 2020 to 11.9%, Arizona remains one of the fastest-growing states in the Southwest.
Decadal Population Change (1910–2020)
| Year | Population | % Change |
| 1910 | 204,354 | 66.2% |
| 1920 | 334,162 | 63.5% |
| 1930 | 435,573 | 30.3% |
| 1940 | 499,261 | 14.6% |
| 1950 | 749,587 | 50.1% |
| 1960 | 1,302,161 | 73.7% |
| 1970 | 1,770,900 | 36% |
| 1980 | 2,718,215 | 53.5% |
| 1990 | 3,665,228 | 34.8% |
| 2000 | 5,130,632 | 40% |
| 2010 | 6,392,017 | 24.6% |
| 2020 | 7,151,502 | 11.9% |
Source: US Census 2020
Arizona Demographics (Summary)
Religion in Arizona (Overview)
Christianity is the largest religious affiliation in Arizona, followed by a sizable unaffiliated population.
Christian: ~67%
Protestant: 39%
Roman Catholic: 21%
Mormon (LDS): 5%
Other Christian groups: ~2%
Unaffiliated: ~27%
Other Religions: ~7%
Hinduism
Buddhism
Judaism
Islam
Other smaller faiths
🔗 Read detailed data: Religion in Arizona
Race and Ethnicity in Arizona (Overview)
Arizona has a diverse racial and ethnic composition, strongly influenced by Hispanic and Native American heritage.
White (Non-Hispanic): 53.4%
Hispanic or Latino: 30.7%
Black or African American: 4.4%
Asian: 3.5%
Two or More Races: 3.7%
🔗 Read detailed data: Race and Ethnicity in Arizona
Ancestry in Arizona (Overview)
Arizona’s population reflects a mix of European and American ancestries. Some of the largest ancestry groups include:
German
English
Irish
Italian
American
🔗 Read detailed data: Race and Ethnicity in Arizona
Top cities and Counties in Arizona
Arizona’s population is concentrated in a small number of urban and suburban areas.
Counties: 15 total
Largest County by Population: Maricopa County
Population: ~4.1 million
Home to over half of Arizona’s total population
Largest City: Phoenix (state capital)
Major Cities: Phoenix, Tucson, Mesa
Tucson and Mesa each have populations of around 500,000
🔗 Read detailed data: Counties and Cities in Arizona
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