Based on the historical population data provided for the ZIP code 61856, which corresponds to Monticello in Illinois, the area has experienced steady population growth over the past decade. The population increased from 7,458 in 2010 to 8,212 in 2022, representing a growth of approximately 10.1 percent during this period. Correspondingly, the population density has also increased from 75.99 people per square mile in 2010 to 83.67 people per square mile in 2022.

Given the ZIP code's size of 98.15 square miles and the 2022 population density of 83.67 people per square mile, the area can be classified as rural. Rural areas are characterized by larger living spaces, ranging from 1 to 5 acres, fewer public services, and lower infrastructure density compared to more urbanized areas. The lifestyle in rural areas is typically community-oriented, often centered around local schools and small businesses, with activities such as hobby farming, horse ownership, and significant outdoor activities.

The estimated number of housing units corresponding to the 2022 population, based on the national average household size of 2.61, is approximately 3,146. This suggests that the area has a relatively low housing density, which aligns with the characteristics of a rural lifestyle.