St. David's demographic makeup is not typical of Illinois as a whole, which is generally more diverse. The village's lack of racial diversity and steady economic growth may indicate a relatively isolated community that has not experienced the demographic shifts seen in many other parts of the state and country.

Based on observed trends, St. David will likely remain in the "Low Diversity" category in the near future. The extremely high percentage of white residents (99%) suggests that significant demographic shifts would take considerable time to manifest. The slight increase in the "two or more races" category and the fluctuations in the Hispanic population could be early indicators of a very gradual shift towards increased diversity. If this trend continues and accelerates, the community might eventually transition into a "Transitional Community" category, but this would likely take many years given the current demographic composition.

Economically, if the trend of steady income growth continues, it might eventually attract more diverse populations seeking economic opportunities. However, given the strong persistence of the current demographic makeup, any such changes are likely to be slow and gradual. In conclusion, while St. David has experienced positive economic growth over the past decade, its racial composition has remained remarkably stable. The community is likely to remain categorized as "Low Diversity" for the foreseeable future, with the potential for very gradual diversification over an extended period.