Based on the historical population data for ZIP code 95404 in Santa Rosa, California, the area has experienced fluctuations in population and population density over the past decade. The population peaked in 2017 at 47,551 and has since declined to 43,466 in 2022. Despite these fluctuations, the population density has remained relatively stable, hovering around 550 people per square mile in recent years.

Given the current population density of 543.94 people per square mile, ZIP code 95404 falls within the Suburban Rural classification. This suggests that the area features a blend of rural openness and suburban amenities, with typical lot sizes around 1 acre. The lifestyle in this area is likely to be family-oriented, with a focus on quieter neighborhoods close to nature while still having access to suburban conveniences such as community centers and parks.

The estimated housing units corresponding to the 2022 population, based on the national average household size of 2.61, is approximately 16,654. This indicates a moderate level of urban development activity in the area, with a mix of residential types and clustered housing developments.