The median income in this zip code has shown an upward trend over the past decade, rising from $75,400 in 2013 to $84,886 in 2022. This represents an increase of about 12.6% over nine years. The income growth correlates with the area's stable racial composition, suggesting that the predominantly white community has experienced economic prosperity.

The population has remained relatively stable, fluctuating between 11,000 and 11,500 residents throughout the decade. This stability in population, combined with rising incomes, may indicate that the area is becoming increasingly desirable for higher-income households while maintaining its demographic character.

The stability of the racial composition in this zip code contrasts with many other parts of the country that have seen more significant demographic shifts. The income growth in this area outpaces the national average, which saw median household income rise by about 6.8% between 2013 and 2022 (adjusted for inflation).

The combination of rising incomes, stable population, and persistent low diversity could indicate that this area is becoming increasingly exclusive. It may be attracting or retaining higher-income white families while potentially presenting barriers to entry for more diverse populations.

The 66618 zip code in Topeka shows signs of economic prosperity, while its racial demographics have remained largely unchanged over the past decade. This stability in a "Low Diversity" state contrasts with national trends towards increasing diversity, potentially highlighting unique local factors influencing demographic and economic patterns in this area.