Tall Timbers is a community in St. Mary's County, Maryland, home to about 391 people across 1.4 square miles. Its ZIP code is 20690, and parts of 20692 are in Tall Timbers too.
Homes sold for a median of $296 per square foot in the three months ending August 2026, a seller’s market.
Mostly Tall Timbers; also Piney Point
Part is in Tall Timbers
Each card is that ZIP code’s whole market, including any part outside Tall Timbers. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Tall Timbers’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Tall Timbers well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Ronald Reagan Washington National Airport (DCA)54 miles away |
|---|---|
| Nearest city of 250,000+ | Washington, DC57 miles away |
| Nearest city of 1 million+ | Philadelphia, PA148 miles away |
Straight-line distances from the center of Tall Timbers; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Tall Timbers had 451 residents in the 2020 census, down 2% since 2010.
It’s the 397th largest of 527 towns in Maryland by population.
St. Mary's County grew from 17,182 residents in 1900 to 113,777 in 2020.
St. Mary's County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 87°F in summer, and winter lows average 30°F. About 46.3 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, St Inigoes Webster Nolf, MD weather station (6 miles away).
32,683 jobs at 2,090 businesses in St. Mary's County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Grocery stores
Museums
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by St. Mary's County Public Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Piney Point ElementaryTall Timbers | Pre-K–5 | 435 | Public | 0.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Piney Point.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.