Based on the historical population data for ZIP code 95448 (Healdsburg, California), the area has experienced fluctuations in population and population density over the past decade. The population peaked in 2017 at 18,011 and has since declined to 16,439 in 2022. The population density has followed a similar trend, with a peak of 97.97 people per square mile in 2017 and a current density of 89.42 people per square mile in 2022.

Given the ZIP code's size of 183.84 square miles and the 2022 population density of 89.42 people per square mile, the area can be classified as rural. Rural areas are characterized by larger living spaces, typically ranging from 1 to 5 acres per household, fewer public services, and lower infrastructure density 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.

The estimated number of housing units corresponding to the 2022 population, based on the national average household size of 2.61, is approximately 6,298. This suggests that the area has a relatively low housing density, consistent with the rural classification.