The median income in Islandia has fluctuated over the years but has generally remained high. It reached a peak of $108,075 in 2021 before decreasing to $93,581 in 2022. This recent decline coincides with the continued diversification of the community, particularly the growth in the Hispanic population.

The population has remained relatively stable over the decade, ranging from 12,000 to 13,000 residents. This stability, combined with the high median income, suggests that Islandia has maintained its attractiveness as a residential area despite demographic changes.

The trends observed in Islandia reflect broader national patterns of increasing diversity in suburban areas. Many traditionally white-majority suburbs across the United States have experienced similar demographic shifts, particularly with growth in Hispanic and Asian populations.

The median income in Islandia, even after the recent decline, remains significantly above the national median household income, which was approximately $70,784 in 2021. This indicates that despite demographic changes, Islandia continues to be an affluent community, possibly due to its proximity to New York City and the presence of major employers like CA Technologies.

The stability in population numbers, despite increasing diversity, suggests that Islandia may be experiencing a turnover effect rather than significant new development or expansion. This could be attributed to older residents moving out and being replaced by younger, more diverse families attracted by the area's economic opportunities and quality of life.

Islandia represents an example of a suburban community in transition. While still categorized as a White Majority area, it is evolving towards greater diversity. The economic impacts of this transition appear to be minimal so far, with the area maintaining its high income levels. However, the recent decrease in median income will require monitoring to determine if it represents a new trend or a temporary fluctuation in this changing community landscape.