Castro Valley CDP, California Demographics & Population 2026

Population Overview

Castro Valley CDP is a mid-sized community located in California. The total population is 65,389. It ranks as the 140th most populous out of 1,577 cities and towns in California.

Age Demographics

The median age in Castro Valley CDP is 42.8 years. This is 14% higher than the state median of 37.6 years.

Economy, Income & Housing

The median household income in Castro Valley CDP is $138,069. This is 43% higher than the state median of $96,334. Compared to the national median of $78,538, household income here is 76% higher. The poverty rate stands at 7.5%. This is 38% lower than the state poverty rate of 12.0%. The unemployment rate is 3.8%. This is 41% lower than the state rate of 6.4%. The median home value is $1,058,200. Housing costs are 52% higher than the state median of $695,400. The home-value-to-income ratio of 7.7x suggests that housing affordability is a significant concern for many residents. 71.5% of occupied housing units are owner-occupied. This homeownership rate is 28% higher than the state average of 55.8%.

Race & Ethnicity

Castro Valley CDP is a highly diverse community where no single racial or ethnic group constitutes a majority of the population. Asian residents account for 33.9%. The Black or African American population is significantly higher than the state average (8.6% vs 5.3%). The Hispanic or Latino population (17.6%) is well below the state average of 39.8%. The Asian population is significantly higher than the state average (33.9% vs 15.0%).

Education

43.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% higher than the state rate of 36.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.4%. Notably, 17.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Castro Valley CDP, California is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against California state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,577 Census-designated places in California. For official data, visit data.census.gov.