Washington County, UT

Settlement & growth (pre-1960)

Before American settlement, the area now known as Washington County was inhabited by the Southern Paiute people, who lived in small, nomadic bands across the region for centuries. Spanish explorers and traders passed through in the 18th century, but no permanent European settlements were established until the mid-19th century. The first permanent American settlers were Mormon pioneers sent by Brigham Young in the 1850s to establish cotton and other crops in the warm, arid climate. The first settlement was Washington, founded in 1857, followed by St. George in 1861, which quickly became the county seat and the largest town. These early settlers were primarily of English and Scandinavian descent, drawn by religious mission and the promise of land and self-sufficiency. The "Dixie Mission," as it was called, aimed to produce cotton, grapes, and other warm-weather crops, and the settlers were largely from the northern Utah settlements, bringing with them a strong Latter-day Saint culture and a communal work ethic.

Subsequent waves of settlement in the late 19th and early 20th centuries saw the founding of Hurricane (1906) and La Verkin (1897), both established by Mormon families who built irrigation systems to farm the Virgin River valley. The population grew slowly but steadily, reaching about 10,000 by 1950. The economy was based on agriculture, small-scale mining, and later, tourism as visitors began to discover the area’s red rock landscapes. The construction of the Interstate 15 corridor in the 1960s and the establishment of Zion National Park as a major tourist destination began to shift the economy toward services and hospitality. The population remained overwhelmingly white and Latter-day Saint through this period, with very little immigration from outside the United States.

Modern era (post-1965)

The post-1965 era brought significant changes to Washington County, driven primarily by domestic migration rather than international immigration. The 1965 Hart-Cellar Act had a minimal direct impact on the county, as the foreign-born population remains low at 3.4%. Instead, the major demographic shift came from the Sun Belt migration of the 1970s and 1980s, as retirees and families from California, the Pacific Northwest, and the Rust Belt moved to the area for its warm climate, low cost of living, and perceived safety. St. George became a major retirement destination, with a wave of older adults settling in planned communities like SunRiver and Green Valley. This in-migration increased the county’s population from about 13,000 in 1970 to over 90,000 by 2000.

The Hispanic population grew during this period, rising from a negligible share to 11.7% by 2020, driven by both domestic migration from other parts of the Southwest and some direct immigration from Mexico and Central America. Hispanic residents are concentrated in St. George and Washington City, where they work in construction, hospitality, and agriculture. The East/Southeast Asian population, at 1.0%, is small but growing, with families settling in St. George and Ivins, often drawn by professional opportunities in healthcare and education. The Indian subcontinent population is negligible at 0.1%, and the Black population remains very small at 0.5%. The county’s racial and ethnic composition is still overwhelmingly white (81.8%), but the non-white share is slowly increasing, primarily through Hispanic growth and a small but steady influx of Asian and other minority groups.

Suburbanization has reshaped the county, with new master-planned communities like Little Valley in St. George and Sand Hollow near Hurricane absorbing much of the population growth. The county’s college-educated share has risen to 33.3%, reflecting the in-migration of professionals and retirees with higher education levels. The Latter-day Saint population remains dominant, but the influx of non-Mormon residents has diversified the religious landscape, with growing numbers of evangelical Christians and secular residents.