The zip code 94574 in St. Helena, California, is categorized as having a "White Majority" with a significant Hispanic minority as of 2022. The community demonstrates "Moderate Diversity" with whites comprising 71% of the population and Hispanics representing 24%. The median income of $102,575 in 2022 indicates an affluent area, significantly above the national median income.

St. Helena has consistently maintained its status as a "White Majority" community over the past decade. There have been subtle shifts indicating a trend towards increased diversity. From 2013 to 2019, there was a steady increase in the Hispanic population from 23% to 28%, suggesting a "Transitional Community" pattern. This trend reversed slightly in recent years, settling at 24% in 2022. The Asian and Black populations have remained relatively constant, each representing about 1-2% of the community throughout the decade. The "Two or More Races" category doubled from 1% to 2% between 2020 and 2022, indicating a growing acceptance of multiracial identities.

The economic landscape of St. Helena has shown fluctuations over the past decade. The median income peaked at $107,347 in 2013, dropped to a low of $90,830 in 2017, and then rebounded to $117,226 in 2021 before settling at $102,575 in 2022. This volatility might reflect economic challenges and recoveries in the wider region or nation. The population peaked at 8,625 in 2017 and has since declined to 7,554 in 2022. This 12.4% decrease could be attributed to various factors such as housing costs, job market changes, or possibly the impact of wildfires in the region. Interestingly, the period of highest Hispanic representation (2018-2019 at 28%) coincided with some of the lower median income years. As the Hispanic percentage decreased slightly in recent years, median income saw an uptick.