St. Marys County, MD Zip Codes
23 zip codes across 18 cities in St. Marys County, MD
About St. Marys County
St. Marys County, Maryland (MD) contains 23 unique zip codes spanning 18 cities and communities. Each zip code covers a different area within the county, with varying demographics, income levels, and housing markets.
Browse the complete list below to find detailed population, income, home values, cost of living, and climate data for any zip code in St. Marys County.
Cities in St. Marys County
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All Zip Codes in St. Marys County, MD
| Zip Code | City |
|---|---|
| 20606 | Abell |
| 20609 | Avenue |
| 20618 | Bushwood |
| 20619 | California |
| 20620 | Callaway |
| 20621 | Chaptico |
| 20624 | Clements |
| 20626 | Coltons Point |
| 20628 | Dameron |
| 20630 | Valley Lee |
| 20634 | Great Mills |
| 20636 | Hollywood |
| 20650 | Leonardtown |
| 20653 | Lexington Park |
| 20659 | Mechanicsville |
| 20667 | Lexington Park |
| 20670 | Lexington Park |
| 20674 | Piney Point |
| 20680 | Ridge |
| 20684 | Saint Inigoes |
| 20687 | Ridge |
| 20690 | Valley Lee |
| 20692 | Valley Lee |
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Frequently Asked Questions
How many zip codes are in St. Marys County, MD?
St. Marys County, MD has 23 zip codes across 18 cities.
What cities are in St. Marys County?
Cities in St. Marys County include Abell, Avenue, Bushwood, California, Callaway, Chaptico, Clements, Coltons Point, Dameron, Great Mills, Hollywood, Leonardtown, Lexington Park, Mechanicsville, Piney Point, Ridge, Saint Inigoes, Valley Lee.
What state is St. Marys County in?
St. Marys County is located in Maryland (MD).
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.