Marengo is a city in McHenry County, Illinois, United States on the Kishwaukee River.

[9] In the early morning of June 11, 2017, at around 4:50 A.M., a house in the northwest suburbs exploded.

The gas explosion set four houses on fire and damaged 50 more, nearly 20 of which were deemed "unlivable."

[10][11] Marengo is governed by the mayor, John Koziol, and a city council of eight aldermen.

24.9% of all households were made up of individuals, and 9.8% had someone living alone who was 65 years of age or older.

It has a circulation of 6,300 and is mailed to every home and business in the greater Marengo and Union, Illinois area.