Placentia is a larger medium-sized city located in the state of California. With a population of 52,192 people and 11 associated neighborhoods, Placentia is the 177th largest community in California.

Housing costs in Placentia 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 Placentia 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 Placentia telecommute to their jobs. Overall, about 13.93% 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.

One thing noticeable about Placentia, although not a huge city, is that it has a large population of people who are young, single, educated, and upwardly-mobile career starters. That’s because Placentia is full of single people in their 20s and 30s and who have undergraduate or graduate degrees and are starting careers in professional occupations. This makes Placentia a pretty good place for young, educated career starters looking to find many people like themselves, with good opportunities for friendships, socializing, romance, and fun.

The education level of Placentia ranks among the highest in the nation. Of the 25-and-older adult population in Placentia, 43.73% 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 Placentia in 2022 was $46,069, which is upper middle income relative to California and the nation. This equates to an annual income of $184,276 for a family of four. However, Placentia contains both very wealthy and poor people as well.

Placentia is an extremely ethnically-diverse city. The people who call Placentia home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Placentia residents report their race to be White, followed by Asian. Placentia also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 35.92% of the city’s residents. Important ancestries of people in Placentia include German, Irish, English, Italian, and French.

Foreign born people are also an important part of Placentia's cultural character, accounting for 24.14% of the city’s population.

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