Arizona:

A Demographic and Electoral Profile

Arizona, known as the “Grand Canyon State,” occupies a unique place within the political and demographic transformation of the modern American Southwest. According to the latest population estimates, Arizona’s population reached approximately 7.58 million in 2025, accounting for roughly 2.2% of the United States' total population. Over the past several decades, Arizona has emerged as one of the fastest-growing states in the nation, shaped by migration, urban expansion, retirement communities, economic development, and immigration from both other American states and abroad.

Arizona joined the Union in February 1912 as the forty-eighth state and the final state admitted within the contiguous United States. Politically, Arizona historically leaned strongly Republican in presidential elections. From 1952 through 2016, the state voted Republican in every presidential election except 1996, when Bill Clinton carried the state. Yet the political landscape of Arizona has undergone substantial transformation in recent years. Donald Trump’s 2016 victory margin was narrower than those of previous Republican nominees, and in 2020 Joe Biden carried Arizona by approximately 0.3%, becoming the first Democratic presidential candidate to win the state since Bill Clinton. Biden’s 49.4% share of the vote represented the strongest Democratic presidential performance in Arizona since Lyndon B. Johnson’s landslide victory in 1964.

Arizona’s rapid population growth has significantly altered both its political importance and electoral influence. Over the past half-century, the state’s electoral vote total has nearly tripled, from 4 in 1960 to 11 today. Nevertheless, despite continued growth, Arizona did not gain an additional electoral vote following the 2020 Census, a result that surprised many demographic analysts who had anticipated further congressional expansion.

Since the 2010 Census, Arizona has experienced sustained population growth exceeding 15%, placing it among the fastest-growing states in the country. Much of this growth has been concentrated within the Phoenix metropolitan region, especially Maricopa County. Between July 2017 and July 2018 alone, Maricopa County reportedly added more than 200 residents per day, gaining over 81,000 people during that period. Maricopa became one of the fastest-growing and most populous counties in the United States, attracting more net domestic migration than any other county in the nation.

Arizona covers approximately 113,990 square miles, making it the sixth-largest state in the country by land area. Despite rapid population growth, the state maintains a relatively low population density because of its vast deserts, mountain ranges, and sparsely inhabited rural regions. Arizona averages roughly 65 people per square mile, substantially below the national average. Large areas of the state remain geographically isolated, including tribal lands, desert regions, and mountainous territories.

Arizona occupies a particularly important position in the demographic history of Native America. The state has the second-largest percentage of Native American residents in the United States after Alaska. Native peoples constitute more than 13% of Arizona’s population, a proportion unmatched by any other state in the continental United States. Arizona is also one of the “Four Corners” states, uniquely positioned at the intersection of Arizona, New Mexico, Utah, and Colorado—the only place in the United States where four states meet simultaneously.

The state’s population remains heavily concentrated around the Phoenix metropolitan area and Tucson. Phoenix, the state capital, has grown into one of the largest metropolitan areas in the country and serves as Arizona's economic, financial, and political center. Tucson, the state’s second-largest city, remains a major educational, military, and cultural hub. Maricopa County alone contains more than sixty percent of Arizona’s total population and encompasses nine of the state’s ten largest cities, including Phoenix, Mesa, Chandler, Scottsdale, Glendale, and Tempe.

According to recent American Community Survey estimates, Arizona’s racial and ethnic composition reflects the diversity characteristic of the modern Southwest:

• White residents constitute approximately 70.4% of the population.

• Individuals identifying with two or more races account for approximately 10.4%.

• Other racial categories comprise approximately 6.9%.

• African Americans represent approximately 4.5%.

• Native Americans constitute approximately 4.25%.

• Asians comprise approximately 3.3%.

• Native Hawaiians and Pacific Islanders account for approximately 0.2%.

Arizona’s demographic composition has also been profoundly shaped by Hispanic and Latino communities, whose historical presence predates Arizona’s incorporation into the United States and whose continued growth has transformed the state's cultural, linguistic, and political character.

Religion continues to play an important role in Arizona’s public and private life, although the state reflects greater religious diversity and secularization than much of the American South. Approximately 67% of Arizona adults identify as Christian. Evangelical Protestants comprise around 26% of the population, while Baptist traditions, including Southern Baptists, remain influential in many communities.

Roman Catholicism represents one of the most historically significant religious traditions in Arizona and remains especially strong among Hispanic communities. The Catholic Church continues to maintain a substantial institutional presence through churches, schools, charities, and diocesan networks throughout the state. Tucson, in particular, has historically served as an important center of Catholic life in the Southwest.

The Church of Jesus Christ of Latter-day Saints also maintains a notable presence in Arizona. Approximately 5% of the state identified as Mormon in earlier surveys, reflecting longstanding Mormon settlement patterns in parts of Arizona dating back to the nineteenth century.

Hinduism has grown steadily within Arizona in recent decades and now represents one of the state’s largest non-Christian religious communities. The growth of Hindu communities is closely tied to immigration from India, particularly among professionals in medicine, engineering, higher education, finance, and technology. Hindu temples and cultural organizations have become increasingly visible in the Phoenix metropolitan region and surrounding suburban communities.

Other religious communities include Jews, Muslims, Buddhists, Sikhs, and practitioners of Native American spiritual traditions. Approximately 27% of Arizona adults identify as religiously unaffiliated or as part of the growing population commonly described as “nones.”

Arizona’s Muslim population has experienced particularly rapid growth in recent decades. Current estimates place the Muslim population at approximately 110,000 individuals, amounting to roughly 1.4% to 1.5% of the state’s population, rather than 3.5%, which appears to overstate the percentage. The growth of Muslim communities in Arizona has resulted from both immigration and religious conversion. Arizona’s Muslim population reflects substantial ethnic and cultural diversity, including communities originating from South Asia, Southeast Asia, the Middle East, and Africa.

Mosques, Islamic centers, schools, and halal businesses have expanded significantly across the Phoenix metropolitan area and other urban centers. Muslim professionals have become especially visible within Arizona’s medical, engineering, academic, and technology sectors. Islamic organizations throughout the state increasingly participate in interfaith activities, educational outreach, refugee support work, and civic engagement initiatives.

Electorally, Arizona has become one of the most closely watched swing states in the United States. In the 2024 U.S. House elections, Arizona cast approximately 3,253,920 votes across its nine congressional districts. Official vote totals included approximately 1,680,841 Republican votes, 1,551,085 Democratic votes, 21,832 Green Party votes, and 162 write-in ballots.

The relatively narrow statewide margin illustrates Arizona’s transformation into a highly competitive political battleground where neither major party enjoys overwhelming dominance. Congressional districts throughout suburban Phoenix and other rapidly growing regions have become especially competitive, reflecting demographic shifts, educational polarization, migration from other states, and changing political alignments among independent voters.

Public campaign finance tracking associated with AIPAC indicates that Arizona presents a mixed political landscape rather than a uniformly aligned one. Publicly available congressional tracker data identify at least one Arizona congressional member—Representative Abe Hamadeh of Arizona’s Eighth Congressional District—as having received reported financial support connected to pro-Israel political networks, including a reported “Israel Lobby Total” of approximately $55,970. Other districts reportedly include members who either reject or distance themselves from AIPAC-related support structures, producing a more politically varied map than in some other states.

Arizona’s broader political significance lies in its combination of polarization and competitiveness. Because statewide electoral margins remain relatively narrow, even modest outside financial spending can become politically consequential in closely contested congressional districts. In Arizona, pro-Israel political funding functions not merely as symbolic alignment but as one component within a larger nationalized ecosystem of campaign finance, lobbying networks, ideological mobilization, and donor influence operating across competitive swing-state elections.