census-designated place
A census-designated place (CDP) is a Place (United States Census Bureau), concentration of population defined by the United States Census Bureau for statistical purposes only.
CDPs have been used in each decennial census since 1980 as the counte ...
in
Contra Costa County
Contra Costa County (; ''Contra Costa'', Spanish language, Spanish for 'Opposite Coast') is a U.S. county, county located in the U.S. state of California, in the East Bay of the San Francisco Bay Area. As of the 2020 United States census, the ...
,
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
,
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
. Shell Ridge sits at an elevation of . The 2020 United States census reported Shell Ridge's population was 1,014.
Geography
According to the
United States Census Bureau
The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the Federal statistical system, U.S. federal statistical system, responsible for producing data about the American people and American economy, econ ...
, the CDP has a total area of , all of it land. The Shell Ridge Open Spa is the largest open space area in Walnut Creek, CA, and contains 31 miles of trails.
White
White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...
, 0.6%
African American
African Americans, also known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...
Pacific Islander
Pacific Islanders, Pasifika, Pasefika, Pacificans, or rarely Pacificers are the peoples of the list of islands in the Pacific Ocean, Pacific Islands. As an ethnic group, ethnic/race (human categorization), racial term, it is used to describe th ...
, 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 65years of age or older. The median age was 49.4years. For every 100 females, there were 100.0 males.
There were 377 housing units at an average density of , of which 367 (97.3%) were occupied. Of these, 90.7% were owner-occupied, and 9.3% were occupied by renters.
Acalanes Union High School District
Acalanes Union High School District is a public union high school district, high school district in Contra Costa County, located in the Bay Area of California. The district takes its name from Rancho Acalanes, an 1834 ranchos of California, Me ...