Marengo, Illinois is a city located in McHenry County, United States, situated along the Kishwaukee River approximately 60 miles northwest of Chicago and 30 miles east of Rockford.This page organizes FFL dealer listings associated with Marengo, Illinois within the directory’s location hierarchy. Visitors can keep browsing focused on the named place, move through its surrounding geography, and open individual listings for record-specific information. The page remains centered on the location itself while the catalogue can change independently. Use the hierarchy to return to broader place pages or continue toward a more specific community. Each step keeps the browsing path anchored to a named place and its surrounding geographic context.