Campgrounds and RV parks near Iroquois, ON

Iroquois sits on the north bank of the St. Lawrence River in Eastern Ontario, roughly midway between Cornwall and Brockville along Highway 401. The village is best known for the Iroquois Lock, part of the St. Lawrence Seaway, and it serves as a practical base for RV travellers exploring the Seaway Valley, Upper Canada Village, and the Thousand Islands region downriver. Most nearby camping is run by the St. Lawrence Parks Commission, an Ontario government agency that operates parks and heritage sites along the northern shoreline of the St. Lawrence River, separate from Ontario Provincial Parks and Parks Canada. Upper Canada Campground and Wildwood Campground fall within this network, while Cardinal / Ottawa South KOA Holiday offers a private, full-service option just east of town. Cross-border options add range: Coles Creek State Park and Eel Weir State Park sit on the New York side of the river, reachable via the Ogdensburg-Prescott International Bridge, and both are operated by New York State Parks.

Ontario-side sites in the Parks of the St. Lawrence system are booked through the reservation portal at reservations.parks.on.ca. The agency uses a full-season launch model, opening the entire camping season at once rather than a rolling window, so campers can secure any 2026 date, including multiple trips, in a single session once bookings open. Site types include basic, waterfront, and serviced sites with electrical and multi-service hookups at select locations. New York State Parks, including Coles Creek State Park and Eel Weir State Park, are booked through the ReserveAmerica-powered New York State Parks reservation system. Campsites can be reserved up to nine months in advance, with same-day reservations accepted until 3 p.m. Maximum stay is 14 continuous nights. Cardinal / Ottawa South KOA Holiday is booked directly through KOA.