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Map data © OpenStreetMap contributors. Activities powered by Viator. Prices and availability come from each provider and are confirmed when you book with them.

  1. Home
  2. Ohio
  3. Grand Lake St. Marys State Park

Camping at Grand Lake St. Marys State Park near Saint Marys

State park · Saint Marys · 194 campsites

A forested campground near fishing, and hiking. RV fit varies by site.

About this campground

Originally constructed as a feeder reservoir dug by hand for the Miami & Erie Canal, Grand Lake St. Marys was the world's largest reservoir when built.

No reviews listedBook on Ohio State Parks
View all 5 photos

At a glance

  • RV sites up to 62 ft

    Length limits vary by campsite.

  • Electric on many sites

    Some sites have no hookups.

  • Pets welcome
  • Public land
OverviewCampsitesAmenities & locationPlan your stay

45 available sites

45 open of 194 sites
Site 051
Tent · Up to 45 ftElectricGrand Lake Camp Sites 1-120 loop
Available all 2 nights
$70 for 2 nights
$35/night · before taxes & fees
Site 011
RV · Up to 40 ftFull hookupsGrand Lake Camp Sites 1-120 loop
Available all 2 nights
$70 for 2 nights
$35/night · before taxes & fees
Site 029
Tent · Up to 40 ftElectricGrand Lake Camp Sites 1-120 loop
Available all 2 nights
$70 for 2 nights
$35/night · before taxes & fees
Site 005
Tent · Up to 40 ftElectricGrand Lake Camp Sites 1-120 loop
Available all 2 nights
$70 for 2 nights
$35/night · before taxes & fees
Site 016
RV · Up to 40 ftFull hookupsGrand Lake Camp Sites 1-120 loop
Available all 2 nights
$70 for 2 nights
$35/night · before taxes & fees
Site 040
RV · Up to 45 ftFull hookupsGrand Lake Camp Sites 1-120 loop
Available all 2 nights
$70 for 2 nights
$35/night · before taxes & fees
Site 041
RV · Up to 45 ftFull hookupsGrand Lake Camp Sites 1-120 loop
Available all 2 nights
$70 for 2 nights
$35/night · before taxes & fees
Site 001
Tent · Up to 40 ftElectricGrand Lake Camp Sites 1-120 loop
Available all 2 nights
$70 for 2 nights
$35/night · before taxes & fees

View full availability calendar · night-by-night from UseDirect

Availability on UseDirect. Showing 40 of 194 sites.

SiteFr
13
Sa
14
Price
001
grand lake camp sites 1-120
✓✓$35
002
grand lake camp sites 1-120
✓✓$35
003
grand lake camp sites 1-120
✓✓$35
004
grand lake camp sites 1-120
✓✓$35
005
grand lake camp sites 1-120
✓✓$35
007
grand lake camp sites 1-120
✓✓$35
009
grand lake camp sites 1-120
✓✓$35
010
grand lake camp sites 1-120
✓✓$35
023
grand lake camp sites 1-120
✓✓$35
From $70 for 2 nights
$35/night · Before taxes & fees
45 sites available for your entire stay

You book directly on Ohio State Parks. Rates and availability can change until reserved. Campground page on Ohio State Parks ↗

45 openSites from $35/night
Book on Ohio State Parks

Amenities & location

  • Air Conditioning
  • Coffee Maker
  • Deck
  • Electric Hookup
  • Electrical Outlets
  • Fire Ring
  • Grill
  • Heating
  • Microwave
  • Oven
  • Pets Allowed
  • Picnic Table
Pets
Pets welcome
Maximum stay
14 nights

Hookups (individual campsites): 33 full-hookup, 144 electric, 10 no-hookup individual sites.

Location

834 Edgewater Drive
Open in Google Maps ↗

Grand Lake St. Marys State Park: questions answered

What is the maximum RV length at Grand Lake St. Marys State Park?
Longest RV site listed: 45 ft (33 of 33 RV sites list a length) (per the listing)
Does Grand Lake St. Marys State Park have RV hookups?
33 full-hookup, 144 electric, 10 no-hookup individual sites (per the listing)
How do I reserve a site at Grand Lake St. Marys State Park?
Reservable on reserveohio.com (per the listing)
Are pets allowed at Grand Lake St. Marys State Park?
Pets allowed (per the listing)
Sources and details

At a glance

Official facts link to their source; “Listing” facts come from the reserveohio.com listing. Anything we can't source says so.

Max rig length
Listing Longest RV site listed: 45 ft (33 of 33 RV sites list a length)
Hookups & power
Listing 33 full-hookup, 144 electric, 10 no-hookup individual sites
Pull-through / back-in
Listing 50 pull-through, 137 back-in
Pets
Listing Pets allowed
Water
Listing Water at 33 sites
Shade
Listing 0 of 141 sites that report shade are listed as shaded
Booking
Listing Reservable on reserveohio.com
Stay limits
Listing 14 nights max
Getting there
Listing 834 Edgewater Drive (map in Location below)
Road & site access · Generators · Quiet hours · Cell signal · Starlink / satellite · Price
Not listed — check with campground
Nearby

Campgrounds to compare

Prefer a roof?

Prefer a roof over your head

All glamping →
  • Mercer County Fairgrounds7.7 mi · Celina
  • Lake Loramie State Park13.3 mi · Minster

Explore nearby

  • Campgrounds near Saint Marys
  • RV rentals near Saint Marys
  • Glamping & cabins near Saint Marys
  • RV rentals in Ohio
  • Glamping in Ohio

Guides for this trip

  • Camping with dogs
024
grand lake camp sites 1-120
✓
✓
$35
025
grand lake camp sites 1-120
✓✓$35
026
grand lake camp sites 1-120
✓✓$35
027
grand lake camp sites 1-120
✓✓$35
029
grand lake camp sites 1-120
✓✓$35
038
grand lake camp sites 1-120
✓✓$35
039
grand lake camp sites 1-120
✓✓$35
051
grand lake camp sites 1-120
✓✓$35
052
grand lake camp sites 1-120
✓✓$35
053
grand lake camp sites 1-120
✓✓$35
054
grand lake camp sites 1-120
✓✓$35
055
grand lake camp sites 1-120
✓✓$35
056
grand lake camp sites 1-120
✓✓$35
057
grand lake camp sites 1-120
✓✓$35
058
grand lake camp sites 1-120
✓✓$35
059
grand lake camp sites 1-120
✓✓$35
060
grand lake camp sites 1-120
✓✓$35
061
grand lake camp sites 1-120
✓✓$35
062
grand lake camp sites 1-120
✓✓$35
063
grand lake camp sites 1-120
✓✓$35
064
grand lake camp sites 1-120
✓✓$35
040
grand lake camp sites 1-120
✓✓$35
041
grand lake camp sites 1-120
✓✓$35
042
grand lake camp sites 1-120
✓✓$35
043
grand lake camp sites 1-120
✓✓$35
044
grand lake camp sites 1-120
✓✓$35
045
grand lake camp sites 1-120
✓✓$35
046
grand lake camp sites 1-120
✓✓$35
047
grand lake camp sites 1-120
✓✓$35
048
grand lake camp sites 1-120
✓✓$35
011
grand lake camp sites 1-120
✓✓$35

✓ available · R reserved · X not available · C closed · W first come, first served · N not yet released

Available Nov 13–15 · 2 nights4 sites open for every night

Kozy Kampground

7.1 mi from Grand Lake St. Marys State Park (straight-line)
Sites from $45/night
$90 total for Nov 13–15 · before taxes & fees
Rates & availability from Campspot · you book on their site
View Campsites
Available Nov 13–15 · 2 nights175 sites open for every night

Mercer County Fairgrounds

7.7 mi from Grand Lake St. Marys State Park (straight-line)
Sites from $18/night
$35 total for Nov 13–15 · before taxes & fees
Rates & availability from Hipcamp · you book on their site
View Campsites
Available Nov 13–15 · 2 nights85 sites open for every night

Lake Loramie State Park

13.3 mi from Grand Lake St. Marys State Park (straight-line)
Sites from $23/night
$46 total for Nov 13–15 · before taxes & fees
Rates & availability from Ohio State Parks · you book on their site
View Campsites
Ways to stay

Have an RV waiting

    Need an RV for your stay?

    Rentals that may deliver here and whose listed length fits sites up to 62 ft. Delivery may be available — confirm fees and dates with the owner before you book.

    2024 Forest River Wildwood X-Lite/Delivery and Set Up Available
    2024 Forest River Wildwood X-Lite/Delivery and Set Up Available

    Travel trailer · 33 ft · sleeps 8 · 58 mi from campground

    $115/night listed · Outdoorsy · Delivery may be available

    View rental
    J&M Towable Travels
    J&M Towable Travels

    Travel trailer · 29 ft · sleeps 8 · 71 mi from campground

    $120/night listed · Outdoorsy · Delivery may be available

    View rental
    The Long Haul *JUNE SPECIAL*
    The Long Haul *JUNE SPECIAL*

    Travel trailer · 33 ft · sleeps 9 · 73 mi from campground

    $149/night listed · RVshare · Delivery may be available

    View rental
    Best time to go

    Seasons, rates and how booked it gets

    stays up to 14 nights (Ohio State Parks rules).

    Share of site-nights open, booked and closed on Ohio State Parks for the next months, checked Nov 7. Months further out may not be released for booking yet.

    MonthOpenBookedClosed
    Nov 202626%1%0%
    Dec 202627%0%0%
    Jan 202727%0%0%
    Feb 202727%0%0%
    Mar 202727%0%0%
    Apr 202776%2%0%
    May 202797%3%0%
    Compare site types

    194 individual reservable campsites from Ohio State Parks, checked Nov 7. Rates are the listed nightly rates.

    Other sites

    194 sites · $70, $40/night

    Loops: Grand Lake Camp Sites 1-120 loop (100), Grand Lake Camp Sites 121-217 loop (94)

    45 open Nov 13–Nov 15