Fiesta Gardens, a neighborhood in San Mateo, California, presents a demographic landscape categorized as a "Majority-Minority" community with "High Diversity" as of 2022. The neighborhood has a population of 2,094 and a median income of $119,250. Fiesta Gardens has experienced demographic shifts over the past decade, reflecting trends of increasing diversity in the San Francisco Bay Area.

In 2013, Fiesta Gardens was classified as having "Moderate Diversity" with a white plurality (47%). Over the decade, the neighborhood transitioned through several categories: Moderate Diversity with White Plurality (2013-2016), High Diversity (2017-2019), and Majority-Minority with High Diversity (2020-2022). This shift was driven by a decline in the white population (from 47% in 2013 to 23% in 2022), an increase in the Hispanic population (from 19% in 2013 to 36% in 2022), and a rise in the Asian population (from 25% in 2013 to 31% in 2022). The community can be classified as a "Transitional Community" due to these changes in racial makeup.

The demographic shifts correlate with economic trends. The median income grew from $106,333 in 2013 to $119,250 in 2022, showing a 12% increase. The population increased from 1,603 in 2013 to 2,094 in 2022, a 30.6% increase. The rising median income suggests that the neighborhood has attracted more affluent residents across various racial groups. This could be attributed to the economic boom in the San Francisco Bay Area, particularly in the tech sector, which has drawn diverse, high-skilled professionals to the region.