The zip code 61755 in Heritage Lake, Illinois, is classified as a Low Diversity community as of 2022. The population is 97% white, meeting the definition of Low Diversity where one racial group comprises over 75% of the population. Over the past decade, Heritage Lake has maintained its Low Diversity status, with the white population consistently above 94%. Minor demographic shifts include a slight decrease in the Hispanic population from 4% in 2013 to 1% in 2022, and the emergence of a small but consistent 1% of individuals identifying as two or more races from 2020 onwards.

The median income in Heritage Lake has shown an overall upward trend, increasing from $74,377 in 2013 to $79,884 in 2022, representing a growth of about 7.4% over nine years. Income fluctuations were observed, with a dip to $70,922 in 2016 followed by a rise to $82,285 in 2019. In recent years, the median income has remained relatively stable around $80,000 since 2018. The population has fluctuated between 3,761 and 3,907 over the observed period, suggesting that economic changes were not driven by significant population shifts.

Heritage Lake's racial composition is more homogeneous than many other areas in the United States. The modest income growth observed is generally in line with national trends of slow but steady income growth over the past decade. The stable population and consistent racial composition suggest that Heritage Lake may be a typical example of a stable, predominantly white suburban community.