The ZIP code 21236, covering Perry Hall in Maryland, has experienced steady population growth over the past decade, with the population increasing from 37,261 in 2010 to 40,033 in 2022. The population density has also risen from 4,121 point 79 people per square mile in 2010 to 4,428 point 43 people per square mile in 2022. Given the ZIP code's size of 9 point 04 square miles and the 2022 population of 40,033, the estimated number of housing units is approximately 15,338, based on the national average household size of 2 point 61.

The population density of 4,428 point 43 people per square mile in 2022 suggests that Perry Hall falls into the urban category. Urban areas are characterized by multi hyphen story residential buildings, commercial buildings, and high levels of infrastructure and services. Residents in urban areas typically live in smaller spaces, ranging from 500 to 1,000 square feet, and enjoy a fast hyphen paced, diverse, and culturally rich lifestyle. The area is well hyphen suited for individuals and families who appreciate the vibrant city life, with access to extensive public transport, restaurants, theaters, and museums.

The consistent population growth and increasing population density over the years indicate ongoing urban development activity in the area. As the population continues to grow, it is likely that the area will see further development of residential and commercial buildings, as well as enhancements to infrastructure and services to accommodate the growing community.