The median income in the area has shown a steady increase over the observed period. In 2013, it was $60,225, rising to $63,196 in 2017, and reaching $72,261 in 2022. This represents a 20% increase in median income over nine years, suggesting real economic growth in the community.

The population has fluctuated during this period. In 2013, it was 1,880, decreasing to 1,818 in 2017, and further declining to 1,622 in 2022. The decrease in population, coupled with rising median income, may indicate that higher-income residents are staying while lower-income residents are moving out, or that the remaining population is experiencing wage growth.

The persistent "Low Diversity" status of Dunkerton contrasts with national trends towards increasing diversity in many urban and suburban areas. The increase in median income aligns with broader economic growth trends seen in many parts of the United States over the past decade, although the rate of increase in Dunkerton appears to be higher than the national average. The population decrease in Dunkerton goes against the trend of urban population growth seen in many U.S. cities, suggesting that this small city might be experiencing some out-migration.

Dunkerton presents a picture of a stable, predominantly white community that has experienced significant economic growth over the past decade. While there are indications of very gradual diversification, the overall racial composition remains largely unchanged. The combination of rising incomes and declining population presents a dynamic that may warrant further investigation into local economic and social factors driving these trends.