Shell Ridge, California

Shell Ridge is a census-designated place^[2] in Contra Costa County, California, United States. Shell Ridge sits at an elevation of 295 feet (90 m). The 2020 United States census reported Shell Ridge's population was 1,014.

Shell Ridge
Census-designated place
Shell Ridge Position in California.
Coordinates: 37°54′21″N 122°02′04″W
Country	United States
State	California
County	Contra Costa
Area [1]
• Total	0.430 sq mi (1.114 km2)
• Land	0.430 sq mi (1.114 km2)
• Water	0 sq mi (0 km2)  0%
Elevation [2]	295 ft (90 m)
Population  (2020)
• Total	1,014
• Density	2,400/sq mi (910/km2)
Time zone	UTC−8 (Pacific)
• Summer (DST)	UTC−7 (PDT)
Area code	925
FIPS code	06-71362
GNIS feature ID	2583136
[2]

Geography

According to the United States Census Bureau, the CDP has a total area of 0.430 square miles (1.11 km²), all of it land. The Shell Ridge Open Space is the largest open space area in Walnut Creek, CA, and contains 31 miles of trails.

Demographics

Historical population

Census	Pop.	Note	%±
2010	959		—
2020	1,014		5.7%
U.S. Decennial Census[3] 2010[4]

Shell Ridge first appeared as a census designated place in the 2010 U.S. Census.^[4]

The 2020 United States census reported that Shell Ridge had a population of 1,014. The population density was 2,358.1 inhabitants per square mile (910.5/km²). The racial makeup of Shell Ridge was 74.6% White, 0.6% African American, 0.0% Native American, 12.7% Asian, 0.0% Pacific Islander, 1.8% from other races, and 10.4% from two or more races. Hispanic or Latino of any race were 7.2% of the population.

The census reported that 100% of the population lived in households.

There were 367 households, out of which 34.1% included children under the age of 18, 71.7% were married-couple households, 4.9% were cohabiting couple households, 16.1% had a female householder with no partner present, and 7.4% had a male householder with no partner present. 15.3% of households were one person, and 9.5% were one person aged 65 or older. The average household size was 2.76. There were 292 families (79.6% of all households).

The age distribution was 23.6% under the age of 18, 4.4% aged 18 to 24, 16.9% aged 25 to 44, 31.2% aged 45 to 64, and 24.0% who were 65 years of age or older. The median age was 49.4 years. For every 100 females, there were 100.0 males.

There were 377 housing units at an average density of 876.7 units per square mile (338.5 units/km²), of which 367 (97.3%) were occupied. Of these, 90.7% were owner-occupied, and 9.3% were occupied by renters.^[5][6]

Education

A portion of Shell Ridge is in the Walnut Creek Elementary School District and the Acalanes Union High School District. Other parts are in the K-12 Mount Diablo Unified School District.^[7]