Blanco Gardens, a neighborhood in San Marcos, Texas, exhibits a demographic profile classified as a "Majority-Minority" community with "Moderate Diversity" as of 2022. The Hispanic population comprises 48%, while the White population accounts for 24%. Over the past decade, the neighborhood has experienced significant demographic changes and fluctuations in median income. Blanco Gardens is located near the Blanco River.

The neighborhood has undergone a notable transition in its racial composition over the past decade. In 2013, Blanco Gardens was categorized as having a "Hispanic Majority" with 74% of the population identifying as Hispanic. By 2022, this shifted to a "Majority-Minority" status with "Moderate Diversity." The Hispanic population decreased from 74% to 48%, while the White population increased from 22% to 24%. The "Other" category increased from 0% to 20% between 2019 and 2020, indicating a possible change in race reporting or an influx of residents from diverse backgrounds.

The median income in Blanco Gardens has shown volatility over the years. In 2013, the median income was $36,169, peaking in 2021 at $42,198 before declining to $36,826 in 2022. This fluctuation correlates with the demographic shifts. As the neighborhood became more diverse, there was a general upward trend in median income from 2013 to 2021. However, the sharp decline in median income from 2021 to 2022 coincides with a slight decrease in the Hispanic population and an increase in the White population.