St. Maries has maintained its homogeneous demographic composition, which is not uncommon in small, rural cities in states like Idaho. The economic growth in St. Maries aligns with broader national trends of rising incomes over the past decade, though the city's median income remains below the national average.

Based on observed trends, St. Maries is likely to continue being categorized as a "Low Diversity" community in the near future. The minimal changes in racial composition over a decade suggest a stable demographic pattern. The recent introduction of a small Black population could potentially indicate the beginning of a gradual shift towards slightly increased diversity.

If the upward trend in median income continues, St. Maries may see further improvements in its economic status. This could potentially lead to increased attractiveness for new residents, which might slowly introduce more diversity over time. In the long term, if these subtle changes continue and accelerate, St. Maries might eventually transition into a "Transitional Community" category, but this would likely be a slow process over many years or decades, given the current stability of its demographic composition.