State Park · Ohio, United States
Grand Lake St. Marys State Park
Grand Lake St. Marys State Park is a state park in Ohio, United States, established in 1949.

Photo: Bruin via Wikimedia Commons, CC BY 2.0. Cropped and resized for display.
Park facts
| Park type | State Park |
|---|---|
| Location | Auglaize, Ohio, United States |
| Established | 1949 |
| Coordinates | 40.5312° N, 84.4997° W |
| Managed by | Ohio state park system |
Every fact above is taken from the sources listed below; anything no source states is left blank rather than guessed.
About Grand Lake St. Marys State Park
Grand Lake St. Marys State Park is a public recreation area located on 13,500-acre (5,500 ha) Grand Lake in Mercer and Auglaize counties, Ohio. Grand Lake is the largest inland lake in Ohio in terms of area, but is shallow, with an average depth of only 5–7 feet (1.5–2.1 m). The state park is open for year-round recreation, including boating, fishing, swimming and hunting. The park consists of the lake and park facilities scattered all around the shore intermingled with private property and a facility operated by Wright State University. It is west of St.
Description from the park's Wikipedia article (CC BY-SA), linked in the sources below.
Planning your visit
Best time to visit
Open year-round
What to do
Airports near this park
The airports a visitor would actually fly into, nearest first — each link opens its profile on our sister site AirportProfiles.
- John Glenn Columbus International Airport (CMH) · Columbus, United States · 92.4 miles away
- Cincinnati Northern Kentucky International Airport (CVG) · Cincinnati / Covington, United States · 102.8 miles away
- Indianapolis International Airport (IND) · Indianapolis, United States · 110.2 miles away
Parks nearby
More parks in Ohio
Frequently asked questions
Where is Grand Lake St. Marys State Park?
Grand Lake St. Marys State Park is in Ohio, United States (40.5312° N, 84.4997° W).
When was Grand Lake St. Marys State Park established?
Grand Lake St. Marys State Park was established in 1949, per the source listed at the foot of this page.
When is the best time to visit Grand Lake St. Marys State Park?
Open year-round.
Sources
- https://en.wikipedia.org/wiki/List_of_protected_areas_of_Ohio — Wikipedia list of Ohio state parks — park name, county/location, size, year where the table states them.
- https://en.wikipedia.org/wiki/Grand_Lake_St._Marys_State_Park — Wikipedia article — description (CC BY-SA).









