The ZIP code 11751, corresponding to Islip in New York, spans an area of 4.11 square miles and had a population of 13,297 in 2022. The population density for this ZIP code in 2022 was 3,235.28 people per square mile, which falls within the urban classification range of 3,000 to 10,000 people per square mile.

Historical population data from 2010 to 2022 reveals that the area has consistently maintained an urban population density, with the highest recorded density of 3,567.4 people per square mile in 2018. The population has fluctuated slightly over the years, reaching a peak of 14,662 in 2018 and a low of 13,297 in 2022. Despite these fluctuations, the population density has remained relatively stable, indicating a consistent urban lifestyle in the area.

Given the urban classification, residents of this ZIP code likely experience a fast-paced and diverse lifestyle, with access to a wide range of cultural amenities, public transportation, and commercial establishments. The estimated number of housing units corresponding to the 2022 population is 5,094, based on the national average household size of 2.61 people per household. These housing units are likely a mix of multi-story residential buildings and commercial structures, typical of an urban environment.