Castro Valley is a larger medium-sized town located in the state of California. With a population of 66,441 people and 13 associated neighborhoods, Castro Valley is the 137th largest community in California.

Castro Valley home prices are not only among the most expensive in California, but Castro Valley real estate also consistently ranks among the most expensive in America.

Also of interest is that Castro Valley has more people living here who work in computers and math than 95% of the places in the US.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 16.90% of the workforce. While this number may seem small overall, as a fraction of the total workforce this is high compared to the rest of the county. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

One downside of living in Castro Valley is that it can take a long time to commute to work. In Castro Valley, the average commute to work is 33.78 minutes, which is quite a bit higher than the national average. On the other hand, local public transit is widely used in the town, so leaving the car at home and taking transit is often a viable alternative.

Although the majority of commuting trips in the town are by private automobile, Castro Valley is somewhat unusual for a town of its size for having a substantial number of people who use public transportation. For a lot of people, the subway helps to get to and from their jobs every morning, which benefits everyone in the Castro Valley area by reducing both traffic and air pollution.

The education level of Castro Valley ranks among the highest in the nation. Of the 25-and-older adult population in Castro Valley, 43.87% have at least a bachelor's degree. The typical US community has just 21.84% of its adults holding a bachelor's degree or graduate degree.

The per capita income in Castro Valley in 2022 was $56,942, which is upper middle income relative to California, and wealthy relative to the rest of the US. This equates to an annual income of $227,768 for a family of four. However, Castro Valley contains both very wealthy and poor people as well.

Castro Valley is an extremely ethnically-diverse town. The people who call Castro Valley home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Castro Valley residents report their race to be White, followed by Asian. Castro Valley also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 17.08% of the town’s residents. Important ancestries of people in Castro Valley include German, Irish, English, Italian, and Portuguese.

Foreign born people are also an important part of Castro Valley's cultural character, accounting for 28.42% of the town’s population.

The most common language spoken in Castro Valley is English. Other important languages spoken here include Chinese and Spanish.