Williamson CDP, Arizona Demographics & Population 2026

Population Overview

Williamson CDP is a small city located in Arizona. The total population is 6,112. It ranks as the 86th most populous out of 445 cities and towns in Arizona.

Age Demographics

The median age in Williamson CDP is 65.9 years. This is 70% higher than the state median of 38.8 years. Only 6.5% of residents are under 18, indicating fewer families with children. 18.8% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Williamson CDP is $89,083. This is 16% higher than the state median of $76,872. Compared to the national median of $78,538, household income here is 13% higher. The poverty rate stands at 3.6%. This is 71% lower than the state poverty rate of 12.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.2%. This is 39% lower than the state rate of 5.2%. The median home value is $703,000. Housing costs are 96% higher than the state median of $358,900. The home-value-to-income ratio of 7.9x suggests that housing affordability is a significant concern for many residents. 94.7% of occupied housing units are owner-occupied. This homeownership rate is 41% higher than the state average of 67.0%.

Race & Ethnicity

Williamson CDP has a predominantly White (non-Hispanic) population, comprising 91.8% of all residents. Hispanic or Latino residents account for 4.7%. The White (non-Hispanic) population is significantly higher than the state average (91.8% vs 53.4%). The Hispanic or Latino population (4.7%) is well below the state average of 31.0%. The Asian population (1.2%) is well below the state average of 3.3%.

Education

48.5% of residents aged 25 and older hold a bachelor's degree or higher. This places Williamson CDP in the top 10% of all cities in the state for educational attainment. This is 49% higher than the state rate of 32.6%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 97.9%. Notably, 18.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Williamson CDP, Arizona is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Arizona state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 445 Census-designated places in Arizona. For official data, visit data.census.gov.