Fort Massac State Park

Fort Massac State Park is an Illinois DNR state park in the South region of Illinois. Camping site types: Class A (showers, electricity, vehicular access); Class B/S (showers, vehicular access, no electric). Also offers: Youth group camping; Organized/adult group camping. Pets ARE allowed (leashed, with water, never left unattended or in a parked vehicle) - IDNR's general statewide practice, confirmed via Starved Rock State Park's own IDNR FAQ. Reservable online through Illinois DNR's own Explore More Illinois system (camp.exploremoreil.com, redirects to the live recreation.exploremoreil.com/IllinoisWeb/ booking platform). Advance booking requires at least 3 days' notice; most sites are reservable May 1-October 31 (some year-round - confirm per park).

Class A: $20/night ($30 holiday weekends) - showers, electricity, vehicular access. Class B/S: $10/night - showers and vehicular access, no electric. Youth group (Class Y): $2/person/night, $20/day minimum. Organized/adult group (Class O): $4/person/night, $40/day minimum. Reservation fee $5/reservation (non-refundable) plus first night's camping fee; camping fees refunded if cancelled online 3+ days before arrival. Discounts (about half the listed camping fee, full utility fee still applies) for Illinois residents 62+ or disabled with a Class 2/2A card; Illinois disabled veterans and POWs camp free aside from the utility fee; no entrance fee to any Illinois state park (dnr.illinois.gov).