Based on the historical population data provided for the ZIP code 07621 in Bergenfield, New Jersey, the area can be classified as densely urban. The population density has consistently remained above 9,000 people per square mile from 2010 to 2022, reaching a peak of 9,667.45 in 2021. This high population density indicates a highly developed urban environment with multi story residential buildings, commercial establishments, and advanced infrastructure.

The lifestyle in this densely urban area is likely fast paced and diverse, with residents having access to a wide range of cultural amenities, public transportation, and services. The estimated housing units corresponding to the 2022 population is 11,036, suggesting that living spaces are relatively small, as is typical in densely populated urban areas.

Over the 12 year period from 2010 to 2022, the population in ZIP code 07621 has grown by approximately 7 percent, from 26,935 to 28,804. This steady population growth indicates ongoing urban development and a consistent demand for housing and services in the area.