Population figures have fluctuated over the decade. The population peaked in 2015 at 1,539 residents. It has since declined to 1,300 in 2022, a decrease of about 15.5% from the peak. This population decline, coupled with the increasing median income, might suggest that while some residents may be leaving the area, those who remain are experiencing improved economic conditions.

The racial homogeneity of this zip code is notably high compared to national averages. As of 2022, the U.S. Census Bureau estimated that the white alone, not Hispanic or Latino population in the United States was about 59.3%, significantly lower than the 96% in this zip code. The median household income in the United States in 2022 was approximately $71,186. The zip code's median income of $64,714 is lower than the national average but has been closing the gap over the years. The population decline in this zip code goes against the trend of overall U.S. population growth, which has been positive, albeit slowing, over the past decade.

Prairie du Rocher shows signs of very gradual diversification and economic improvement. It remains a predominantly white, low-diversity area with a shrinking population. The economic gains, as evidenced by rising median income, have not translated into population growth, suggesting complex local dynamics that may involve factors such as job opportunities, housing availability, or changing preferences among younger generations.