ParcelioSt. Mary's County, Maryland: parcel data and property records
51,217 St. Mary's County parcels on one searchable map: owner of record and mailing address, assessed and appraised values and recorded sales, plus lot boundaries and location. Screen by absentee ownership, acreage, year built and owner tenure.
What the data covers
These bars show real field-by-field coverage for St. Mary's County in our database, so you know exactly what you are getting before you search. Numbers refresh as the county publishes new records.
Not held for St. Mary's County: deeded acreage and vacancy. Those fields are carried where the county publishes them.
Most recent recorded sale on file: 2026-09-11.
Areas covered
Parcel counts by place, largest first: Mechanicsville (10,537), Lexington Park (7,941), Leonardtown (7,034), California (6,796), Hollywood (4,889).
Recent sales
1,942 St. Mary's County parcels have a recorded sale dated since November 2025. Across 1,343 priced sales, with a deed recorded on several parcels counted once, the median price was $412,500 and the middle half sold between $289,900 and $526,000.
Land use mix
The most common land use or property class on file, as the county writes it, by share of parcels with one: Residential 76%, Town House 7%, Agricultural 6%, Exempt 4%, Commercial 3%.
Nearest counties
- Calvert County: about 19 mi away, 44,167 parcels
- Charles County: about 25 mi away, 73,124 parcels
- Dorchester County: about 32 mi away, 22,981 parcels
- Prince George's County: about 41 mi away, 308,677 parcels
- Talbot County: about 42 mi away, 22,368 parcels
Search St. Mary's County parcels
The map is free to browse - parcel lines, boundaries, and location. Owner of record, assessed values, recorded sales, year built and the full parcel report come with a plan that costs less than one hour of a title runner's time.
Explore the St. Mary's County map See plans
Common questions
How many parcels are in St. Mary's County, Maryland?
Parcelio carries 51,217 parcel records for St. Mary's County, Maryland, with owner information on 99 percent of them.
Can I find out who owns a property in St. Mary's County?
Yes. Search by owner name, address, or parcel number to pull the record: owner of record and mailing address, assessed values, recorded sales, year built and lot lines on the map. Sale records here currently run through 2026-09-11.
How do I find vacant land or absentee owners in St. Mary's County?
We do not hold vacancy data for St. Mary's County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field. St. Mary's County does have owner mailing state: 3,001 parcels have an owner mailing address outside Maryland.
Can I search St. Mary's County by lot size or acreage?
Yes. Acreage is on 99 percent of St. Mary's County parcels, mapped from the parcel boundary, and the advanced search filters on it directly - set a minimum and maximum to pull every tract in that range, then stack vacancy or absentee ownership on top.