Whitley Gardens is a census-designated place in San Luis Obispo County, California. Whitley Gardens sits at an elevation of . The 2020 United States census reported Whitley Gardens's population was 325.
According to the United States Census Bureau, the CDP covers an area of 1.3 square miles (3.4 km), 99.16% of it land and 0.84% of it water. Whitley Gardens is located on the Estrella River.
Whitley Gardens first appeared as a census designated place in the 2010 U.S. census.
The 2020 United States census reported that Whitley Gardens had a population of 325, all of whom lived in households. The population density was . The racial makeup was 220 (67.7%) White, 5 (1.5%) African American, 12 (3.7%) Native American, 0 (0.0%) Asian, 0 (0.0%) Pacific Islander, 19 (5.8%) from other races, and 69 (21.2%) from two or more races. Hispanic or Latino of any race were 86 persons (26.5%).
There were 122 households, out of which 45 (36.9%) had children under the age of 18 living in them, 85 (69.7%) were married-couple households, 3 (2.5%) were cohabiting couple households, 14 (11.5%) had a female householder with no partner present, and 20 (16.4%) had a male householder with no partner present. 19 households (15.6%) were one person, and 13 (10.7%) were one person aged 65 or older. The average household size was 2.66. There were 98 families (80.3% of all households).
The age distribution was 72 people (22.2%) under the age of 18, 19 people (5.8%) aged 18 to 24, 59 people (18.2%) aged 25 to 44, 113 people (34.8%) aged 45 to 64, and 62 people (19.1%) who were 65years of age or older. The median age was 46.9years. For every 100 females, there were 72.9 males.
There were 126 housing units at an average density of , of which 122 (96.8%) were occupied. Of these, 106 (86.9%) were owner-occupied, and 16 (13.1%) were occupied by renters.
It is in the Paso Robles Joint Unified School District for grades PK-12.