The ZIP code 18017, which encompasses Bethlehem in Pennsylvania, has experienced steady population growth over the past decade, with its population increasing from 35,584 in 2010 to 38,227 in 2022. This growth has been accompanied by a corresponding increase in population density, which has risen from 2,249.3 people per square mile in 2010 to 2,416.37 people per square mile in 2022.

Given the ZIP code's size of 15.82 square miles and its 2022 population density of 2,416.37 people per square mile, the area can be classified as suburban. Suburban areas typically feature a mix of residential types, including single-family homes and denser housing developments, with lot sizes ranging from 0.25 to 1 acre. The estimated number of housing units corresponding to the 2022 population, based on the national average household size of 2.61, is approximately 14,646.

The lifestyle in this suburban area is likely to be family-oriented, with good access to schools, parks, and shopping centers. The community life may be active, with residents participating in sports leagues, homeowners associations, and local festivals. The area's population density suggests a balance between open spaces and urban amenities, providing residents with a comfortable living environment that combines the benefits of suburban living with proximity to urban conveniences.