According to the historical population data, the ZIP code 07945 corresponding to Mendham in New Jersey has exhibited a relatively stable population trend over the past decade. The population in this area has fluctuated between approximately 9,000 and 9,400 residents from 2010 to 2022, with the most recent data point in 2022 indicating a population of 9,204. Given the ZIP code's size of 18.67 square miles, the population density in 2022 was calculated to be 492.98 people per square mile.

Based on the population density, this ZIP code can be classified as a rural area. Rural areas typically feature larger living spaces, ranging from 1 to 5 acres, and have a lower density of infrastructure and public services compared to more urban areas. The lifestyle in rural areas is often community-oriented, centered around local schools and small businesses, with activities such as hobby farming, horse ownership, and significant outdoor activities being common.

The estimated number of housing units corresponding to the 2022 population, assuming the national average household size of 2.61, is approximately 3,526. This suggests that the area is primarily composed of single-family homes or smaller multi-family dwellings, which is consistent with the characteristics of a rural area.