The ZIP code 91803, corresponding to Alhambra in California, exhibits characteristics of an urban area based on its population density trends over the past decade. With a land area of 3.12 square miles, the population density in this ZIP code has consistently remained above 8,000 people per square mile since 2010, reaching a peak of 9,322.12 people per square mile in 2010. As of 2022, the population density stands at 8,858.65 people per square mile, firmly placing this area in the urban classification range.

The lifestyle in this ZIP code is likely to be fast-paced and diverse, with a rich cultural atmosphere. Residents of this area typically reside in multi-story residential buildings and have access to a wide range of commercial establishments and services. The high population density suggests the presence of advanced infrastructure, including well-developed public transportation systems, which facilitate the daily activities and commutes of the inhabitants.

Given the 2022 population of 27,639 and the national average household size of 2.61, the estimated number of housing units in this ZIP code is approximately 10,590. This indicates a compact living environment, with smaller living spaces compared to suburban or rural areas. The urban setting of ZIP code 91803 is well-suited for individuals and families who enjoy the vibrancy and convenience of city life, with easy access to restaurants, theaters, museums, and other cultural amenities.