Waterloo is a medium-sized city located in the state of Illinois. With a population of 11,144 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 $92,005.00.

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.

A relatively large number of people in Waterloo telecommute to their jobs. Overall, about 11.61% 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.

Waterloo is a good choice for families with children because of several factors. Many other families with children live here, making it a place where both parents and children are more likely to develop social ties with other families. The city’s good public school district and large population of college-educated adults provide an environment conducive to academic success. Many people own their own single-family homes, providing areas for children to play and stability in the 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 population of Waterloo is very well educated relative to most cities and towns in the nation, where the average community has 21.84% of its adult population holding a 4-year degree or higher: 36.42% of adults in Waterloo have a bachelor's degree or even advanced degree.

The per capita income in Waterloo in 2022 was $44,435, which is upper middle income relative to Illinois and the nation. This equates to an annual income of $177,740 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.