Horseshoe Lake-Madison State Park

Horseshoe Lake-Madison State Park is an Illinois DNR state park in the West Central region of Illinois. Camping site types: Class C (vehicular access without showers, or walk-in with shower access). 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 C: $8/night - vehicular access without showers, or walk-in sites with shower access. 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).