Here are the Arizona cities with largest population gains Article originally posted on AZ Big Media on December 16, 2025 Arizona continues to experience robust population growth, fueling gains in both the labor force and the broader economy. According to newly released estimates from the Arizona Office of Economic Opportunity, Arizona added 97,044 residents between July 1, 2024, and July 1, 2025, representing a growth rate of 1.2%. And many Arizona cities saw robust population gains. Fastest-Growing Counties (by Percentage) Pinal County – 3.7% Yuma County – 1.9% Santa Cruz County – 1.5% Mohave County – 1.3% Maricopa County – 1.3% Counties with Largest Numeric Growth Maricopa County – 61,543 Pinal County – 18,127 Pima County – 7,127 Yuma County – 4,147 Mohave County – 2,971 Yavapai County – 1,827 Cities with Largest Population Gains Phoenix – 11,793 Surprise – 7,027 Buckeye – 5,968 Goodyear – 5,875 Maricopa – 4,894 Glendale – 4,721 Mesa – 4,499 Marana – 3,956 The perfect place for business and talent Arizona’s continued growth underscores its appeal as a destination for talent, opportunity, and innovation. Between 2023 and 2024, Maricopa County ranked no. 1 in the U.S. for net migration (U.S. Census). Arizona has recorded labor force growth for nine consecutive months. The state has also seen a relatively lower unemployment rate than the U.S. Arizona’s September unemployment rate was 4.2%, compared to 4.4% nationally. Since 2011, Arizona has added nearly 1.3 million people, a growth rate of 20%. Between 2024 and 2025, Arizona added on average 266 people per day.