The correlation between demographic and economic trends suggests that the city's economic prosperity may be attracting new residents, including a small number from diverse backgrounds. The consistent income growth could be contributing to the stability of the existing demographic makeup.

Iona's demographic composition differs significantly from national trends. The United States is becoming increasingly diverse, with many urban and suburban areas transitioning to Majority-Minority or High Diversity categories. Iona's persistence as a Low Diversity community suggests it may be somewhat insulated from broader national demographic shifts.

Based on observed trends, Iona will likely remain in the Low Diversity category for the foreseeable future. However, subtle increases in Hispanic, Asian, and multi-racial populations suggest a slow trend towards greater diversity. If these trends continue, Iona might transition into a Transitional Community category within the next decade.

Economically, the steady income growth is likely to continue, potentially attracting more residents and further driving population growth. This economic prosperity could eventually lead to increased diversity if it attracts a wider range of newcomers to the area.

In conclusion, while Iona remains a predominantly white, economically prosperous community, there are early indications of gradual diversification. The coming years may see a slow but steady shift towards a more diverse population, though significant changes to the city's demographic makeup would likely take several decades at the current rate of change.