The population data for the ZIP code 21045, corresponding to Columbia in Maryland, indicates that the area has experienced steady population growth over the past decade. The population increased from 37,874 in 2010 to 41,222 in 2022, with a corresponding increase in population density from 3,852.9 people per square mile to 4,193.49 people per square mile.

Given the ZIP code's size of 9.83 square miles and the 2022 population of 41,222, the area can be classified as urban, with a population density falling within the range of 3,000 to 10,000 people per square mile. This suggests that the area is characterized by multi-story residential buildings, commercial buildings, and a high level of infrastructure and services.

The lifestyle in this urban setting is likely to be fast-paced, diverse, and culturally rich, suitable for individuals and families who enjoy vibrant city life with extensive public transport, restaurants, theaters, and museums. The estimated number of housing units corresponding to the 2022 population is 15,793, based on the national average household size of 2.61 people per household. This indicates a relatively high housing density, consistent with an urban environment.