Based on the historical population data provided for the ZIP code 21133 in Randallstown, Maryland, the area has experienced gradual population growth and increasing population density over the past decade. The population increased from 25,955 in 2010 to 28,120 in 2022, while the population density rose from 2,635.03 people per square mile in 2010 to 2,854.82 people per square mile in 2022.

Given the ZIP code's size of 9.85 square miles and the 2022 population density of 2,854.82 people per square mile, the area can be classified as suburban, bordering on urban. Suburban areas typically have population densities between 1,000 and 3,000 people per square mile, featuring a mix of residential types and denser developments compared to rural areas.

The lifestyle in this suburban area is likely to be family-oriented, with good access to schools, parks, and shopping centers. The community life may be active, with residents participating in sports leagues, homeowners associations, and local festivals. The estimated 10,774 housing units corresponding to the 2022 population, based on the national average household size of 2.61, suggest a mix of single-family homes, townhouses, and some multi-family dwellings.