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. There's nothing like the smell of a brand new house, and in Waterloo, 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 Waterloo, and putting down their money on brand new construction. Waterloo’s real estate is, on average, some of the newest in the nation. Waterloo does seem to be experiencing an influx of affluent people, because 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.

Telecommuters are a relatively large percentage of the workforce: 10.63% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. 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 great place for families with children to consider. First of all, many other families with children live here, making Waterloo a place where both parents and children are more likely to develop social ties with other families, as well as find family-oriented services and community. The city’s good public school district and large population of college-educated adults provide an environment conducive to academic values. With regard to real estate, Waterloo has a high rate of owner-occupied single family homes, which tends to reflect stability in the local community. Finally, Waterloo’s overall crime rate is lower than average for the country.

Waterloo is a small city, and as such doesn't have a public transit system that people use to get to and from their jobs every day.

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.