The historical population data for ZIP code 91104 in Pasadena, California, reveals a dense urban area with a population density consistently around 9,000 to 10,000 people per square mile over the past decade. This population density suggests a highly developed urban landscape characterized by multi-story residential buildings, commercial structures, and extensive infrastructure and services.

Given the estimated 13,345 housing units corresponding to the 2022 population and an average household size of 2.61, the typical living space in this area is likely to be relatively compact, ranging from approximately 500 to 1,000 square feet per household. This aligns with the urban lifestyle associated with such population densities, where residents often prioritize proximity to amenities and services over larger living spaces.

The lifestyle in this dense urban environment is likely to be fast-paced, diverse, and culturally rich. Residents of ZIP code 91104 can be expected to enjoy the benefits of a vibrant city life, with access to extensive public transportation, a wide variety of restaurants, entertainment venues, and cultural institutions such as theaters and museums. The area is well-suited for individuals and families who value the convenience and excitement of urban living.