According to the population data for ZIP code 11787 in Smithtown, New York, the area has experienced a slight decline in population over the past decade, from 35,068 in 2010 to 33,907 in 2022. Despite this slight decrease, the population density has remained relatively stable, with the 2022 population density being 2,156.93 people per square mile.

Given the ZIP code's size of 15.72 square miles and the 2022 population of 33,907, the area can be classified as suburban, falling within the range of 1,000 to 3,000 people per square mile. This classification suggests that the area likely features a mix of residential types, including single-family homes and denser developments, with lot sizes typically ranging from 0.25 to 1 acre.

The lifestyle in this suburban area is likely 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 estimated number of housing units corresponding to the 2022 population, based on the national average household size of 2.61, is approximately 12,991 units.