Round Lake is a medium-sized village located in the state of Illinois. With a population of 18,491 people and three associated neighborhoods, Round Lake is the 135th largest community in Illinois. There's nothing like the smell of a brand new house, and in Round Lake, 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 Round Lake, and putting down their money on brand new construction. Round Lake’s real estate is, on average, some of the newest in the nation. Round Lake does seem to be experiencing an influx of affluent people, because the median household income is $92,165.00.

Also of interest is that Round Lake 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: 10.55% 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.

Round Lake’s overall crime rate ranks among the lowest in the nation, making it a very safe place to live.

One downside of living in Round Lake is that it can take a long time to commute to work. In Round Lake, the average commute to work is 32.92 minutes, which is quite a bit higher than the national average.

The education level of Round Lake citizens is very high relative to the national average among all cities (21.84%): 39.46% of adults in Round Lake have a bachelor's degree or even advanced degree.

The per capita income in Round Lake in 2022 was $36,959, which is upper middle income relative to Illinois and the nation. This equates to an annual income of $147,836 for a family of four. However, Round Lake contains both very wealthy and poor people as well.

Round Lake is an extremely ethnically-diverse village. The people who call Round Lake home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Round Lake residents report their race to be White, followed by Asian. Round Lake also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 30.10% of the village’s residents. Important ancestries of people in Round Lake include German, Polish, Irish, Italian, and English.

In addition, Round Lake has a lot of people living here who were born outside of the US (27.64%).

The most common language spoken in Round Lake is English. Other important languages spoken here include Spanish and Polish.