Based on the historical population data provided for ZIP code 94579 in San Leandro, California, the area can be classified as urban, with population densities consistently exceeding 6,000 people per square mile from 2010 to 2022. The population peaked in 2016 at 22,412 residents and has since experienced a gradual decline, reaching 19,752 in 2022. Despite this decline, the population density remains high at 6,330.77 people per square mile in 2022.

The high population density suggests that the area is characterized by multi-story residential buildings, commercial establishments, and well-developed infrastructure and services. Living spaces in this urban setting are likely to be smaller compared to suburban or rural areas, typically ranging from 500 to 1,000 square feet. The lifestyle in ZIP code 94579 is likely fast-paced, diverse, and culturally rich, catering to individuals and families who enjoy the vibrant city life with access to public transportation, restaurants, theaters, and museums.

Given the national average household size of 2.61, the estimated number of housing units corresponding to the 2022 population is approximately 7,568. This indicates a substantial number of residential units within the 3.12 square mile area of the ZIP code, further supporting the urban nature of the area.