Is Arizona's population growing or shrinking?
Refreshed annually
It grew by 67,400 between 2024 and 2025. That’s more than the population of the city of Marana. Changes in population reflect birth and death rates, immigration patterns, regional shifts, and even the overall health of the economy. Arizona’s 0.89% annual increase was primarily driven by people moving from other states. In the decade between 2015 and 2025, Arizona’s population grew by 13.7%.
+67.4K
population change (2024 to 2025)
+0.89%
percent change in population (2024 to 2025)
Since 2000, Arizona's population increased in 25 of 25 years. The largest increase occurred between 2005 and 2006, when it gained 190,100 residents. The state's smallest increase during the 21st century occurred between 2010 and 2011 when it gained 41,900 residents.
Arizona gained 67,400 residents between 2024 and 2025.
Annual population change, 1901–2025
What contributes to population change in Arizona?
A state’s population is influenced by three factors:
- Natural population change: If births outnumber deaths in a given year, natural population growth is positive. If deaths exceed births, it is negative. Between 2024 to 2025 natural population change was positive in Arizona, with births exceeding deaths by 7,600.
- Immigration: international migration directly into or out of a state. If more people move in than move out, population change from immigration is positive. If more people move out than move in, it’s negative. Arizona’s population change from immigration was positive, with about 28,200 more people coming from another country to Arizona than leaving.
- Domestic migration, moving between states: Arizona’s population change from domestic migration was positive, with about 31,100 more people moving to Arizona from other states than leaving.
Between 2024 and 2025, domestic migration was the primary driver of population growth in Arizona.
Components of population change, 2011–2025
Which counties in Arizona are growing? Which are shrinking?
Among 15 county equivalents, Maricopa County had the largest population growth in Arizona, welcoming 35,411 new residents. Gila County lost the most, with a loss of 325 residents. County-level population data is available as of 2025.
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Pinal County led Arizona in percent population increase between 2024 and 2025 at 4.6 percent. Gila County ranked last with a 0.6 percent decline.
Between 2024 and 2025, Pinal County gained 4.6% in population, the largest increase in Arizona.
Population change
How does population change in Arizona compare to other states?
Between 2015 and 2025, Arizona’s population has increased by 13.7%. During that same period, the US population grew by 6.2%. Arizona ranks 7th among states in population growth over that decade.
Arizona ranked seventh in population growth between 2015 and 2025.
Percent change in population
Population change between 2024 and 2025, by county in Arizona
| County | Population change rate | |
|---|---|---|
| 1. | Pinal County, AZ | +4.6% |
| 2. | Yuma County, AZ | +1.4% |
| 3. | Cochise County, AZ | +0.91% |
| 4. | Mohave County, AZ | +0.81% |
| 5. | Maricopa County, AZ | +0.76% |
| 6. | Yavapai County, AZ | +0.54% |
| 7. | Santa Cruz County, AZ | +0.51% |
| 8. | Navajo County, AZ | +0.35% |
| 9. | La Paz County, AZ | +0.25% |
| 10. | Pima County, AZ | +0.11% |
Population change between 2015 and 2025, by state
| State | Population change rate | |
|---|---|---|
| 1. | Idaho | +22% |
| 2. | Utah | +17.9% |
| 3. | Florida | +16.5% |
| 4. | Texas | +15.8% |
| 5. | Nevada | +14.9% |
| 6. | South Carolina | +14.8% |
| 7. | Arizona | +13.7% |
| 8. | North Carolina | +12.4% |
| 9. | Delaware | +12.2% |
| 10. | Washington state | +11.4% |
How is the US population changing?
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
