The zip code 55353 in St. Augusta, Minnesota, is categorized as a "Low Diversity" community as of 2022. The area's population is 95% white, with a median income of $87,496 and a total population of 3,839. This demographic composition has remained largely consistent over the past decade, from 2013 to 2022, with the white population consistently above 95%. Minor shifts in diversity include a slight increase in the Hispanic population from 1% to 2%, and fluctuations in the "Two or More Races" category between 1-2%. Other racial groups have maintained consistently low percentages, often at or near 0%.

The median income in St. Augusta has shown a significant upward trend over the past decade. In 2013, the median income was $64,455, increasing to $87,496 by 2022, representing a growth of about 35.7% over nine years. The peak median income was reached in 2021 at $94,069, with a slight decrease in 2022. The population has grown moderately, from 3,619 in 2013 to 3,839 in 2022, an increase of about 6.1%.

The racial homogeneity of St. Augusta is notably high compared to national averages. The United States as a whole has been becoming more diverse over the past decade, while this community has maintained its predominantly white demographic. The median income growth in St. Augusta appears to outpace national averages. The U.S. median household income grew by about 10% between 2013 and 2022 (adjusted for inflation), while St. Augusta saw growth of over 35%. The population growth of 6.1% over nine years is moderate and generally in line with typical suburban growth rates in the United States.