Oronoque is a census-designated place in the town of Stratford, Fairfield County, Connecticut, United States. It is in the northern part of the town, bordered to the north by the city of Shelton, to the east by the Housatonic River, and to the south by the Merritt Parkway. Connecticut Route 110 runs north–south through the community. The administrative offices of Sikorsky Aircraft are in the eastern part of the CDP, between Route 110 and the Housatonic River.