According to the historical population data for ZIP code 91123 in Pasadena, California, the area has experienced consistent population growth over the past decade. The population increased from 192 in 2010 to 376 in 2022, nearly doubling in size. Correspondingly, the population density has also risen from 3,200 people per square mile in 2010 to 6,266.67 people per square mile in 2022.

Given the ZIP code's size of 0.06 square miles and the 2022 population of 376, the area can be classified as urban. Urban areas typically have population densities between 3,000 and 10,000 people per square mile, which aligns with the ZIP code's current density of 6,266.67 people per square mile.

The lifestyle in this urban area is likely fast-paced, diverse, and culturally rich, suitable for individuals and families who enjoy vibrant city life. The area likely features a mix of multi-story residential buildings and commercial establishments, with a high level of infrastructure and services. Living spaces in urban areas are typically smaller, ranging from 500 to 1,000 square feet, and residents benefit from extensive public transportation, restaurants, theaters, and museums.