The ZIP code 60101, encompassing Addison in Illinois, has experienced a gradual population decline in recent years, despite an earlier period of growth. The population peaked in 2015 at 41,133 residents and has since decreased to 37,716 in 2022. Correspondingly, the population density has also decreased from a high of 3,555.14 people per square mile in 2015 to 3,259.81 in 2022.

With a current population density of 3,259.81 people per square mile, the area can be characterized as urban. Urban areas typically feature a mix of multi-story residential buildings, commercial structures, and well-developed infrastructure and services. The lifestyle in such areas is generally fast-paced, diverse, and culturally rich, catering to individuals and families who enjoy the vibrant atmosphere of city life, with access to extensive public transportation, a variety of dining options, entertainment venues, and cultural institutions.

However, it is important to note that the population and density have been declining in recent years. This trend could potentially impact the urban character of the area, possibly leading to changes in the mix of residential and commercial properties, as well as the overall lifestyle of the inhabitants. It may also influence urban development activities, such as the construction of new housing units or the repurposing of existing structures.