As of 2022, zip code 85143 in San Tan Valley, Arizona, is classified as a "White Majority" community with moderate diversity. The white population comprises 64% of the total, while Hispanic residents represent 25%. The area has experienced steady population growth over the past decade, reaching 41,363 residents in 2022, with an increase in median income to $71,137.

Over the past decade, San Tan Valley has maintained its status as a "White Majority" community, but with some changes. There is evidence of a gradual shift towards increased diversity. The Hispanic population has grown from 22% in 2013 to 25% in 2022, indicating a slow but steady transition. While still predominantly white, the community has consistently maintained a significant Hispanic presence, keeping it in the "Moderate Diversity" category throughout the decade. Other racial groups, including Asian, Black, and Native American populations, have remained relatively stable, each comprising less than 5% of the population.

The economic landscape of San Tan Valley has shown correlations with its demographic shifts. The median income has increased from $67,505 in 2013 to $71,137 in 2022, with a peak of $81,948 in 2021. This growth coincides with the gradual increase in diversity. The population has grown from 37,641 in 2013 to 41,363 in 2022, a 9.9% increase. This growth may have contributed to the area's increasing diversity. Despite fluctuations, the overall trend in median income has been positive, suggesting economic resilience even as the community becomes more diverse.