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ZIP Code Database - Facts & Stats

Data Last Updated: November 1, 2022

ZIP Codes for City of Saint Marys City, MD

Saint Marys City, MD Covers 1 ZIP Code

ZIP CodeTypeCountyPopulation
ZIP Code 20686P.O. BoxSaint Marys1,332

Timezone(s):Eastern (GMT -05:00)
Population:1,332 (More Details)
Male Population:566
Female Population:766
Median Age:20
ZIP Codes:1
Area Codes:2
Total Area:764 square miles (county)
Land Area:357 square miles (county)
Water Area:407 square miles (county)

Saint Marys City, MD Demographic Information *

There is no Census data for the city of SAINT MARYS CITY, MD. We have pulled information for the ZIP Code 20686 instead.
Total population1,332
Male population566
Female population766
Median age (years)20.2
White Population1,118
Black Population96
Indian Population1
Asian Population45
Hawaiian Population0
Hispanic Population66
Median age (Male)20.3
Median age (Female)20.1
Total households28
Family households (families)18
Average household size2.18
Average family size2.5
Total housing units38
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 11/1/2022],
  2. Internal Data Creation [Last Updated: 11/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],