Based on the historical population data for the ZIP code 93420, which covers Arroyo Grande in California, the area has experienced steady population growth over the past decade. The population increased from 29,224 in 2010 to 32,596 in 2022, with a corresponding rise in population density from 115.18 people per square mile to 128.47 people per square mile during the same period.

Given the ZIP code's size of 253.73 square miles and the 2022 population density of 128.47 people per square mile, the area can be classified as rural. Rural areas typically have population densities between 50 and 500 people per square mile, characterized by larger living spaces, ranging from 1 to 5 acres, and a community-oriented lifestyle centered around local schools and small businesses.

The estimated number of housing units corresponding to the 2022 population is 12,489, assuming the national average household size of 2.61 people per household. This suggests that the area has a relatively low housing density, consistent with a rural lifestyle.