ZIP Codes Box

St. Mary's County, Maryland ZIP codes

28ZIP codes
28Cities and towns
113,480People in ZIP areas
227, 240, 301Area codes

St. Mary's County is in Maryland and the Eastern Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.

All ZIP codes in St. Mary's County

ZIP codeCityTypePopulationMedian income
20606AbellStandard291$88,262
20609AvenueStandard714$118,102
20618BushwoodStandard1,705$105,508
20619CaliforniaStandard14,212$119,432
20620CallawayStandard1,115$165,972
20621ChapticoStandard958–
20624ClementsStandard796$104,545
20626Coltons PointStandard284–
20627ComptonPO Box only––
20628DameronStandard503–
20630DraydenStandard559$233,411
20634Great MillsStandard7,088$139,375
20635HelenPO Box only––
20636HollywoodStandard10,486$163,690
20650LeonardtownStandard16,094$143,116
20653Lexington ParkStandard26,852$103,048
20656LovevilleStandard87–
20659MechanicsvilleStandard24,324$121,654
20660MorganzaPO Box only14–
20667Park HallStandard150–
20670Patuxent RiverStandard2,046$70,371
20674Piney PointStandard769$171,985
20680RidgeStandard663–
20684Saint InigoesStandard802$180,060
20686Saint Marys CityPO Box only971–
20687ScotlandStandard415–
20690Tall TimbersStandard1,077$122,750
20692Valley LeeStandard505$201,250

Cities and towns in St. Mary's County

Area codes in St. Mary's County

Questions

How many ZIP codes are in St. Mary's County, MD?
St. Mary's County has 28 ZIP codes, 24 of them standard ZIP codes for street addresses.
What cities are in St. Mary's County?
St. Mary's County ZIP codes cover Abell, Avenue, Bushwood, California, Callaway, Chaptico, Clements and Coltons Point and 20 other places.
What area code is St. Mary's County, MD?
St. Mary's County uses area codes 227, 240, 301, 410, 443 and 667.
What time zone is St. Mary's County in?
St. Mary's County is in Eastern Time.

Other Maryland counties