In 2023, Marengo, IL had a population of 7.12k people with a median age of 33.3 and a median household income of $72,586. Between 2022 and 2023 the population of Marengo, IL declined from 7,471 to 7,123, a −4.66% decrease and its median household income grew from $71,196 to $72,586, a 1.95% increase.
The 5 largest ethnic groups in Marengo, IL are White (Non-Hispanic) (84.5%), White (Hispanic) (7.48%), Two+ (Hispanic) (3.24%), Two+ (Non-Hispanic) (1.99%), and Other (Hispanic) (1.46%).
None of the households in Marengo, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
97.3% of the residents in Marengo, IL are U.S. citizens.
In 2023, the median property value in Marengo, IL was $206,100, and the homeownership rate was 68.8%.
Most people in Marengo, IL drove alone to work, and the average commute time was 28.2 minutes. The average car ownership in Marengo, IL was 2 cars per household.