ZIP code 61107 in Rockford, Illinois covers an area of 15.66 square miles and has a population of 30,417 as of 2022. This results in a population density of 1,942.34 people per square mile, which falls within the suburban classification. The suburban classification indicates a mix of residential types and denser developments compared to rural areas.

Historical population data from 2010 to 2022 shows that the population in ZIP code 61107 has remained relatively stable, fluctuating between approximately 30,000 and 32,500 residents. The population density has also remained consistent, ranging from 1,934.87 to 2,070.75 people per square mile during this period. This stability in population and density suggests that the area has not experienced significant urban development or demographic shifts over the past decade.

Given the suburban classification and the estimated 11,654 housing units corresponding to the 2022 population based on the national average household size of 2.61, the lifestyle in ZIP code 61107 is likely family-oriented. The area likely provides access to suburban amenities such as schools, parks, and shopping centers. ZIP code 61107 may feature a mix of single-family homes, townhouses, and smaller multi-family buildings, with lot sizes typically ranging from 0.25 to 1 acre.