The Village of Onarga is located in Iroquois County, Illinois in East Central Illinois. Onarga's residents consider it to be the Midwest's perfect small town. Onarga is proud to be the home of the only movie theater in Iroquois County. Onarga boasts a 9-hole golf course and Country Club; a beautiful, spacious public park with a public swimming pool, three baseball/softball fields, a soccer field, and a Community Center Building for private and civic functions; two gas stations; two banks; and a grocery store. Onarga also has a library, a barber shop, a plumbing and heating contractor, a hardware store, a professional photographer, two insurance companies, a medical clinic, an eye doctor, a dentist, three nurseries, a restaurant, a funeral home, a hair salon, two automotive repair businesses and a sporting goods store. There are three churches and Iroquois West Middle School. Onarga has almost everything a family needs or wants to enjoy quality of living in a friendly, small-town atmosphere.

The third largest county in Illinois in area, Iroquois County offers a rich mixture of agriculture, business, and manufacturing with plenty of really nice little towns to live in, one of the nicest being Onarga. Forty miles of Interstate Highway 57 bisect the county from north to south, and US Routes 24 and 45 cross at Gilman.