Washington is a medium-sized city located in the state of Illinois. With a population of 15,890 people and five associated neighborhoods, Washington is the 157th largest community in Illinois. There's nothing like the smell of a brand new house, and in Washington, you'll find that a large proportion of houses were recently built. New growth in residential real estate is an indication that people are choosing to move to Washington, and putting down their money on brand new construction. Washington’s real estate is, on average, some of the newest in the nation. Washington does seem to be experiencing an influx of affluent people, because the median household income is $87,104.00.

Also of interest is that Washington 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: 10.87% 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.

Because of many things, Washington 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, Washington really has some of the features that families look for when choosing a good community to raise children. Is Washington 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.

As is often the case in a small city, Washington doesn't have a public transportation system that people use for their commute.

The citizens of Washington are among the most well-educated in the nation: 43.46% of adults in Washington 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 Washington in 2022 was $40,156, which is upper middle income relative to Illinois and the nation. This equates to an annual income of $160,624 for a family of four. However, Washington contains both very wealthy and poor people as well.

The people who call Washington home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Washington residents report their race to be White, followed by Asian. Important ancestries of people in Washington include German, English, Irish, Italian, and French.

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