El Cajon is a larger medium-sized city located in the state of California. With a population of 104,414 people and 37 associated neighborhoods, El Cajon is the 67th largest community in California.

Housing costs in El Cajon are among some of the highest in the nation, although real estate prices here don't compare to real estate prices in the most expensive communities in California.

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

A relatively large number of people in El Cajon telecommute to their jobs. Overall, about 8.77% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. 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.

The education level of El Cajon citizens is a little higher than the average for US cities and towns: 22.97% of adults in El Cajon have at least a bachelor's degree.

The per capita income in El Cajon in 2022 was $29,639, which is lower middle income relative to California, and middle income relative to the rest of the US. This equates to an annual income of $118,556 for a family of four. However, El Cajon contains both very wealthy and poor people as well.

El Cajon is an extremely ethnically-diverse city. The people who call El Cajon home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of El Cajon residents report their race to be White, followed by Black or African-American. El Cajon also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 28.28% of the city’s residents. Important ancestries of people in El Cajon include German, Iraqi, English, Irish, and Assyrian/Chaldean/Syriac.

Foreign born people are also an important part of El Cajon's cultural character, accounting for 28.83% of the city’s population.

The most common language spoken in El Cajon is English. Other important languages spoken here include Spanish and Arabic.