The ZIP code 92021, encompassing Harbison Canyon in California, spans an area of 29.18 square miles and had a population of 67,921 in 2022, resulting in a population density of 2,327.66 people per square mile. Considering the national average household size of 2.61, the estimated number of housing units corresponding to the 2022 population is approximately 26,023.

Analyzing the historical population data from 2010 to 2022, the area has experienced steady population growth, with the population increasing from 61,923 in 2010 to 67,921 in 2022. The population density has also risen accordingly, from 2,122.1 people per square mile in 2010 to 2,327.66 in 2022. This consistent growth suggests that the area has been attracting new residents and undergoing urban development over the past decade.

Given the population density of 2,327.66 people per square mile in 2022, the ZIP code 92021 can be classified as a suburban area. Suburban areas typically feature a mix of residential types, including single-family homes, townhouses, and some multi-family dwellings, with lot sizes ranging from 0.25 to 1 acre. The lifestyle in suburban areas is generally family-oriented, with good access to schools, parks, shopping centers, and other amenities that promote an active community life.