Grand Lake St. Marys Homes for Sale
Mercer & Auglaize Counties · West Central Ohio
*Median asking price of the 10 active homes (single-family, condo, townhouse, manufactured and new construction) in Celina and St. Marys. Figures based on information from the WCAR MLS and MLS Now as of October 11, 2026.
About Grand Lake St. Marys real estate
Grand Lake St. Marys is Ohio's largest inland lake — roughly 13,500 acres across Mercer and Auglaize counties — with Celina at its west end and St. Marys at its east end. Buyers come for lakefront and lake-view homes, boating and fishing, and classic small-town streets.
This page pulls together every active home for sale in Celina and St. Marys. The MLS feed does not flag lakefront or lake-view homes, so the listings below cover both lake communities — tell us what you want (lakefront, lake-view, lake-access, dockable, year-round or seasonal) and we will send you only those.
At a glance
- Ohio's largest inland lake
- Celina (Mercer County) and St. Marys (Auglaize County) are the two lake cities
- Lakefront, lake-view and lake-access homes
Communities
The Grand Lake communities
Active listings in each community right now. Select one for its full market page.
Newest listings in Celina & St. Marys
Active$319,00015058 Glynwood-New Knoxville
Saint Marys, OH 45885
Listing courtesy of Lakeshore Realtors
Single Family Home · MLS #311887
Active$169,900601 Main
Saint Marys, OH 45885
Listing courtesy of Binkley Real Estate- Wapakoneta
Single Family Home · MLS #311879
Active$699,900354 Miami Erie
Saint Marys, OH 45885
Listing courtesy of Choice Properties Real Estate, Inc.
Single Family Home · MLS #311680
Active$259,0001357 Spring
Saint Marys, OH 45885
Listing courtesy of Ron Spencer Real Estate
Single Family Home · MLS #311613
Active$129,0000 OH 219 St Rt 219
Celina, OH 45822
Listing courtesy of Lakeshore Realtors
Single Family Home · MLS #311142
Active$39,9005359 Karafit
Celina, OH 45822
Listing courtesy of Master Key Realty
Manufactured · MLS #310947
Active$284,499116 Wayne
Saint Marys, OH 45885
Listing courtesy of Berkshire Hathaway Professional Realty
Single Family Home · MLS #310545
Active$800,000Address withheld by seller
Celina, OH 45822
Listing courtesy of Master Key Realty
Commercial · MLS #310127
Active$800,000Address withheld by seller
Celina, OH 45822
Listing courtesy of Master Key Realty
Single Family Home · MLS #310128
Active$249,900518 Jackson
Saint Marys, OH 45885
Listing courtesy of Master Key Realty
Commercial · MLS #309482
Active$295,000500 High
Saint Marys, OH 45885
Listing courtesy of Master Key Realty
Commercial · MLS #309029
Active$300,000125 Spring
Saint Marys, OH 45885
Listing courtesy of Master Key Realty
Commercial · MLS #309014
Market snapshot
Grand Lake St. Marys housing market at a glance
What is for sale today by property type and price.
By property type
- Land & Lots15
- Single Family Homes9
- Commercial Properties5
- Manufactured Homes1
By price
- Homes Under $150K17
- Homes $150K – $250K4
- Homes $250K – $400K5
- Homes $400K+4
Counts and prices are asking prices for active for-sale listings, based on information from the WCAR MLS and MLS Now as of October 11, 2026.
Recently sold
Recently sold homes in the Grand Lake area
Homes that recently closed in the busiest communities here.
Closed$169,900602 Wayne
Saint Marys, OH 45885
Listing courtesy of Suchland Realty Group
Single Family Home · MLS #311302
Closed$129,000101 Ash
Saint Marys, OH 45885
Listing courtesy of Dye Real Estate & Land Company
Single Family Home · MLS #311245
Closed$249,000620 Mill
Celina, OH 45822
Listing courtesy of Non-member Office
Single Family Home · MLS #311693
Closed$179,900322 Ash
Celina, OH 45822
Listing courtesy of Master Key Realty
Single Family Home · MLS #311350
Closed$230,000245 Fairlawn
Celina, OH 45822
Listing courtesy of Cowan, Realtors
Single Family Home · MLS #311080
Closed$420,0002905 York
Celina, OH 45822
Listing courtesy of Bee Gee Realty & Auction Company
Single Family Home · MLS #311272
What to check before you buy on the lake
A short list to run through on any lake home — we will walk you through each one.
- Lakefront, lake-view or lake-access? Each is priced differently, and "lake view" does not include shoreline or water access.
- Shoreline: ask about the seawall or bank, any dock, and the permits that go with them.
- Flood zone and insurance: get a flood-zone determination and an insurance quote before you make an offer.
- Water and sewer: confirm whether the home is on public sewer or a septic system, and on city water or a well.
- Water quality: check current advisories from the Ohio Department of Natural Resources and Ohio EPA for the part of the lake you are considering.
- Year-round or seasonal: look at heating, insulation and road access, and ask whether neighbors are mostly full-time residents.
- Taxes and rules: ask about property taxes, any lake or homeowner association, and local rules on rentals.
Grand Lake St. Marys real estate FAQ
How many homes are for sale in Grand Lake St. Marys, Ohio?
As of October 11, 2026, there are 30 active listings across 2 communities in the lake area. The most are in St. Marys (24) and Celina (6). The list is refreshed daily from the MLS.
What is the median asking price in Grand Lake St. Marys?
The median asking price of the 10 active homes in Celina and St. Marys is $254,000, and the middle half are priced between $177,425 and $310,375. Those are asking prices, not sale prices.
What towns are on Grand Lake St. Marys?
Celina (Mercer County) at the west end and St. Marys (Auglaize County) at the east end are the lake's two cities.
How big is Grand Lake St. Marys?
About 13,500 acres, which makes it Ohio's largest inland lake.
Does this page show only lakefront homes?
No. The MLS does not mark lakefront or lake-view homes, so this page shows every active listing in Celina and St. Marys. Tell us what you are looking for — lakefront, lake-view or lake-access — and we will send you only those.
How do I tour a home in Grand Lake St. Marys?
Call or text (419) 302-3940 or send a message through our contact page. The LV5 Real Estate Team at Hartsock Realty can set up showings anywhere in the Grand Lake area and send you new listings as they come on the market.
More ways to explore
Other areas
Buying or selling in Grand Lake St. Marys?
Talk to a local agent who knows the lake well. We respond to every inquiry — usually within the hour.