The ZIP code 08031, encompassing Bellmawr in New Jersey, has experienced a steady population growth over the past decade, with the population increasing from 11,672 in 2010 to 11,791 in 2022. The population density has also increased accordingly, from 3,682.02 people per square mile in 2010 to 3,719.56 people per square mile in 2022. Given the ZIP code's size of 3.17 square miles, the estimated housing units corresponding to the 2022 population is 4,518, based on the national average household size of 2.61.

The population density of 3,719.56 people per square mile in 2022 suggests that Bellmawr falls into the urban classification. Urban areas are characterized by multi dash story residential buildings, commercial buildings, and high levels of infrastructure and services. The lifestyle in such areas is typically fast dash paced, diverse, and culturally rich, suitable for individuals and families who enjoy vibrant city life with extensive public transport, restaurants, theaters, and museums. Living spaces in urban areas generally range from 500 to 1,000 square feet.

The consistent population growth and increasing population density over the years indicate that Bellmawr has been experiencing urban development and densification. This trend suggests that the area has been attracting new residents and businesses, likely due to its proximity to major cities, employment opportunities, and various amenities.