The historical population data for the ZIP code 60180, which corresponds to Union in Illinois, shows a consistent increase in population and population density from 2010 to 2022. The area spans 20.11 square miles and had a population of 3,627 in 2022, resulting in a population density of 180.36 people per square mile.

Based on the population density, this area falls within the rural classification range. Rural areas are characterized by larger living spaces, ranging from 1 to 5 acres per household, and a community-oriented lifestyle centered around local schools and small businesses. Residents in rural areas often engage in activities such as hobby farming, horse ownership, and outdoor pursuits, taking advantage of the natural environment and open spaces.

The population growth in this ZIP code has been steady over the past 12 years, with an increase of approximately 32 percent from 2010 to 2022. This growth suggests that the area is experiencing some level of development and attracting new residents. However, the population density remains well within the rural range, indicating that the area has maintained its rural character despite the population increase.