Periods of slightly higher diversity seem to correlate with higher median incomes. The highest median income of $191,793 in 2021 coincides with one of the more diverse years in the dataset. The population has remained relatively stable over the decade, with a slight increase from 12,282 in 2013 to 12,968 in 2022. This suggests that the demographic changes are likely due to gradual resident turnover rather than significant influxes of new residents.

Upper Montclair is becoming more diverse at a slower pace compared to national averages. The United States as a whole has been moving towards becoming a "Majority-Minority" nation, with projections suggesting this transition could occur by the mid-2040s. In contrast, Upper Montclair remains in the "White Majority" category, albeit with a gradual shift towards increased diversity.

The high median income of the area suggests that economic barriers may be slowing the diversification process. This could be due to high housing costs limiting accessibility for a more diverse range of residents. The increasing diversity, particularly in the "two or more races" category, aligns with national trends of growing multiracial populations. This could indicate a generational shift, with younger, more diverse families gradually moving into the area or existing residents' children identifying with multiple racial categories.

Upper Montclair remains a predominantly white, high-income area, but shows signs of a gradual transition towards greater diversity. This change, though slower than national trends, suggests a subtle shift in the community's demographic makeup that may continue in the coming years, potentially leading to a more diverse and inclusive community while maintaining its economic prosperity.