Based on the historical population data provided for the ZIP code 07043 in Upper Montclair, New Jersey, the area has experienced a steady population growth from 12,023 in 2010 to 12,968 in 2022. The population density has also increased from 4,771.03 people per square mile in 2010 to 5,146.03 people per square mile in 2022, indicating a consistent trend of urbanization over the past decade.

With a population density of 5,146.03 people per square mile in 2022, the area falls into the urban classification. Urban areas are characterized by 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 estimated number of housing units corresponding to the 2022 population, based on the national average household size of 2.61, is 4,968.58. This suggests a high density of residential development in the area, which aligns with the urban classification.