Marengo is a somewhat small city located in the state of Illinois. With a population of 7,699 people and two associated neighborhoods, Marengo is the 269th largest community in Illinois.

Marengo real estate is some of the most expensive in Illinois, although Marengo house values don't compare to the most expensive real estate in the U.S.

Telecommuters are a relatively large percentage of the workforce: 8.04% 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.

One downside of living in Marengo is that it can take a long time to commute to work. In Marengo, the average commute to work is 30.78 minutes, which is quite a bit higher than the national average.

Marengo 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 percentage of adults in Marengo with college degrees is slightly lower than the national average of 21.84% for all communities. 15.42% of adults in Marengo have a bachelor's degree or advanced degree.

The per capita income in Marengo in 2022 was $35,044, which is middle income relative to Illinois and the nation. This equates to an annual income of $140,176 for a family of four. However, Marengo contains both very wealthy and poor people as well.

Marengo is a somewhat ethnically-diverse city. The people who call Marengo home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Marengo residents report their race to be White, followed by Black or African-American. Marengo also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 11.34% of the city’s residents. Important ancestries of people in Marengo include German, Irish, Italian, Polish, and English.

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