Grand Lake St. Marys spans 13,500 acres in western Ohio, making it the largest inland lake in the state. The area sits at an elevation of 870 feet above sea level in relatively flat terrain. Campers can expect humid summer conditions with temperatures typically ranging from 70-85°F, while spring and fall offer milder camping weather with cooler nights requiring additional layers.
What to do
Swimming pools and splash pads: At Grand Lake St. Marys State Park, the swimming pool and splash pad are major draws for summer visitors. "The state park features a swimming pool and splash pad particularly appreciated by families with children, along with mini-golf, boat rentals, and several playgrounds," notes a camper. The pool does close briefly each day, as one visitor points out: "There is a nice pool and splash pad. Weirdly, the pool closed from 4 to 5, leaving us with nowhere to go on a 90+ degree day."
Local history exploration: The Neil Armstrong birthplace in Wapakoneta offers a cultural excursion within 15 minutes of camp. "Neil Armstrong was born in nearby Wapakoneta so there are some sights to see there, and the towns of Celina and one other are cute too," shares a recent visitor. This makes for a worthwhile side trip when water activities aren't an option.
Outdoor recreation: Indian Lake State Park Campground provides water-based recreation about 30 miles east of St. Marys. "Right on Indian lake, you can enjoy the beach, boating, swimming, fishing and relaxing. Last year, the state park added a nice inground swimming pool," writes one camper. Another mentions the specialized beach areas: "There is a camper beach area, swimming pool and boat launch within the campground."
What campers like
Spacious camping sites: Wildcat Woods Campgrounds receives praise for its cleanliness and facilities. "Very clean and friendly! They have the nicest cleanest camp bathrooms/shower house I've ever seen. Fishing, pond swimming, trails," reports a satisfied visitor. These well-maintained facilities make for a comfortable camping experience.
Kid-friendly amenities: Huggy Bear Campground offers multiple recreational options. "Clean! Tons to do especially for kids, pet friendly, definitely get rowdy on the weekends- book ahead to snag the best sites. Mini golf, fishing, 3 pools, inflatable in the water, they have a whole schedule for the weekends here," shares one family who stayed for five days.
Convenient hookups: Campers appreciate the variety of site options at Grand Lake St. Marys. "Large spacious sites with cement or paved spots. Can be muddy after rain," notes one visitor describing the available sites. The pull-through section has a different feel, however: "The pull through area is very cramped; more like a parking lot; the campground is quiet; family friendly; no golf carts all over."
What you should know
Water quality concerns: The water quality at Grand Lake St. Marys has been an ongoing issue. "The entire lake stinks of pig poop. All the air smells like poo. You feel like you are breathing feces when you approach the water," reports one camper candidly. Others confirm similar experiences: "Could not swim in the water due to contamination which they have spent millions to repair and is slowly on the up and up."
Full-hookup limitations: At Wapakoneta KOA, 15 miles east of St. Marys, site sizes can be restrictive. "The actual sites are very small. Not much room to fit the trailer and vehicle. Basically the site is as wide as your awning," notes one visitor. Despite this, the campground receives praise for its amenities: "Nice little weekend getaway... Had a back-in, water/electric spot that was roomy as we were on an end. Wood deck, picnic table, and fire ring included."
Seasonal considerations: Most glamping options near St. Marys, Ohio operate seasonally, typically from April through October. Weather can impact the experience significantly, with summer humidity making air conditioning desirable in glamping units. Several campgrounds close entirely during winter months, with KOA Wapakoneta's season running from March to October.
Tips for camping with families
Playground proximity: When booking at Grand Lake St. Marys, request sites near recreation areas. "The camping spot was great. It was very close to the pool and playground. The sites were pull through which was nice for have young kids. Could sit at our spot and watch our kids at the playground," shares one parent.
Weekend planning: For luxury camping with kids near St. Marys, consider the structured activities. "If you're going for family friendly fun where you can sit around a fire with friends and family, this is the place. There is swimming and family activities to keep everyone busy," notes a visitor to KOA Campground Bluffton, about an hour northwest of St. Marys.
Insect preparation: Pack extra insect repellent regardless of which campground you choose. "My husband and I drove 8 hours to visit family and decided to camp here instead of staying in a hotel. It was great! The showers were always clean, the site is huge compared to what we normally stay in. There must have been a nest of some type of bug in our site because I was bit dozens of times but bug spray pretty much fixed that," recounts one camper at Grand Lake St. Marys.
Tips from RVers
Site selection strategy: For RVers seeking shade at Indian Lake State Park, section B gets recommended. "The down side a lot of site are in full sun and no privacy. We do like the B section and try to stay there when we can," advises one experienced camper. This becomes especially important during hot summer days.
Firewood quality: Bring your own seasoned firewood when possible. "The camp store is nice except the firewood was terrible. It was fresh cut and never did burn," reports a camper from Indian Lake State Park. Most campgrounds sell firewood, but quality can vary significantly.
