Westchester is a medium-sized village located in the state of Illinois. With a population of 16,094 people and five associated neighborhoods, Westchester is the 151st largest community in Illinois.

Westchester real estate is some of the most expensive in Illinois, although Westchester house values don't compare to the most expensive real estate in the U.S.

Also of interest is that Westchester 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 Westchester telecommute to their jobs. Overall, about 14.32% 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.

In addition, Westchester is home to many people who could be described as "urban sophisticates". Urban sophisticates are educated, wealthy, executives and professionals, who have urbane tastes in books, food, and travel, whether they actually live in a big city, or choose to reside in a small town. In big or medium-sized cities, urban sophisticates tend to frequent art institutions such as opera, symphonies, ballet, live theatre, and museums.

Because of many things, Westchester is a very good place for families to consider. With an enviable combination of good schools, low crime, college-educated neighbors who tend to support education because of their own experiences, and a high rate of home ownership in predominantly single-family properties, Westchester really has some of the features that families look for when choosing a good community to raise children. Is Westchester perfect? Of course not, and if you like frenetic nightlife, it will be far from your cup of tea. But overall this is a solid community, with many things to recommend it as a family-friendly place to live.

Even though Westchester is a smaller village, it has many people who hop on public transportation – mostly the train for their daily commute to work. Typically, these people are commuting to good jobs in the surrounding cities.

The citizens of Westchester are among the most well-educated in the nation: 45.73% of adults in Westchester have a bachelor's degree or even advanced degree, whereas the average US city has 21.84% holding at least a bachelor's degree.

The per capita income in Westchester in 2022 was $53,223, which is wealthy relative to Illinois and the nation. This equates to an annual income of $212,892 for a family of four.

Westchester is an extremely ethnically-diverse village. The people who call Westchester home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Westchester residents report their race to be White, followed by Black or African-American. Westchester also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 21.29% of the village’s residents. Important ancestries of people in Westchester include Irish, Italian, German, Polish, and Czech.

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