The ZIP code 91354 in Santa Clarita, California, has experienced consistent population growth over the past decade, with the population increasing from 22,763 in 2010 to 25,643 in 2022. The population density has also risen from 4,286.82 people per square mile in 2010 to 4,829.19 people per square mile in 2022. Given the ZIP code's size of 5.31 square miles, the estimated number of housing units in 2022, based on the national average household size of 2.61, is approximately 9,825.

The current population density of 4,829.19 people per square mile indicates that the area falls within the urban classification. Urban areas are characterized by a mix of multi-story residential buildings, commercial buildings, and high levels of infrastructure and services. The lifestyle in such areas is typically fast-paced, diverse, and culturally rich, suitable for individuals and families who enjoy vibrant city life with extensive public transport, restaurants, theaters, and museums.

The consistent population growth and increasing population density suggest that the area has been experiencing steady urban development over the past decade. This development likely includes the construction of new residential units, commercial spaces, and infrastructure improvements to accommodate the growing population.