St. George Island is a community in St. Mary's County, Maryland, home to about 277 people across 0.8 square miles. It has no ZIP code of its own: it’s part of 20674.
Homes sold for a median of $300 per square foot in the three months ending August 2026, a balanced market.
Mostly Piney Point; part is in St. George Island
Each card is that ZIP code’s whole market, including any part outside St. George Island. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. George Island’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Ronald Reagan Washington National Airport (DCA)57 miles away |
|---|---|
| Nearest city of 250,000+ | Washington, DC60 miles away |
| Nearest city of 1 million+ | Philadelphia, PA149 miles away |
Straight-line distances from the center of St. George Island; 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.
St. George Island had 265 residents in the 2020 census, up 3% since 2010.
It’s the 428th 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 (4 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.
Parks (1 nearby)
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.
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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.