Zip code 51459, encompassing Ralston in Iowa, is categorized as "Low Diversity" with a 100% white population as of 2022. The median income is $71,889, and the population consists of 4 individuals. This area has consistently been classified as "Low Diversity" from 2013 to 2022, with the white population comprising between 80% to 100% of the total. There have been no significant shifts in racial composition, maintaining its status as a "White Majority" area. The lack of change in racial demographics is notable, given the small population size.

The median income has shown an upward trend, increasing from $48,213 in 2013 to $71,889 in 2022, representing a 49% increase over this period. This growth in median income suggests improving economic conditions for the small population. The population has declined from 6 individuals in 2013 to 4 in 2022, representing a 33% reduction in the community's size. The combination of rising incomes and declining population could indicate various scenarios, such as younger residents moving out while older, potentially more established residents remain.

Ralston's 2022 median income of $71,889 is slightly above the national average of approximately $70,784, suggesting relative economic health despite its small size. The stability in racial composition contrasts with national trends towards increasing diversity in many areas. However, this is not uncommon in very small, rural communities which often experience less demographic change than urban areas.