The population data for the ZIP code 91768, which corresponds to Pomona in California, shows a relatively stable population over the past decade, fluctuating between approximately 34,000 and 36,000 residents. The population density has remained consistently around 4,500 people per square mile throughout this period, indicating a dense urban environment.

Given the ZIP code's land area of 7.84 square miles and the 2022 population of 34,690, the resulting population density of 4,424.74 people per square mile suggests that this area falls within the urban classification. Urban areas are characterized by multi-story residential buildings, commercial establishments, and well-developed infrastructure and services. Residents in such areas typically live in smaller spaces, ranging from 500 to 1,000 square feet, and enjoy a vibrant, diverse, and culturally rich lifestyle with access to extensive public transportation, restaurants, theaters, and museums.

The estimated number of housing units corresponding to the 2022 population is 13,291, based on the national average household size of 2.61 persons per household. This figure aligns with the urban nature of the area, as it implies a relatively high housing density.