Waterloo is a somewhat small city located in the state of Illinois. With a population of 11,130 people and two associated neighborhoods, Waterloo is the 207th largest community in Illinois. Waterloo has seen a significant amount of newer housing growth in recent years. Quite often, new home construction is the result of new residents moving in who are middle class or wealthier, attracted by jobs, a healthy local economy, or other amenities as they leave nearby or far away areas for greener pastures. This seems to be the case in Waterloo, where the median household income is $88,019.00.

Also of interest is that Waterloo 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: 10.63% 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, Waterloo 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, Waterloo really has some of the features that families look for when choosing a good community to raise children. Is Waterloo 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, Waterloo doesn't have a public transportation system that people use for their commute.

The education level of Waterloo citizens is very high relative to the national average among all cities (21.84%): 34.70% of adults in Waterloo have a bachelor's degree or even advanced degree.

The per capita income in Waterloo in 2022 was $42,135, which is upper middle income relative to Illinois and the nation. This equates to an annual income of $168,540 for a family of four.

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

The most common language spoken in Waterloo is English. Other important languages spoken here include Italian and Polish.