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ZIP CodePO Box

21664

Secretary, MD

ZIP Code 21664 in Secretary, MD has a population of 472 and a median household income of $82,721. Explore Census demographics, housing, and a map.

Demographics

Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.

People
Total population
472
People
Median age
34
Housing
Total households
217
Income
Median household income
$82,721
Housing
Total housing units
257
Employment
Employment rate
67%
Education
Bachelor’s degree or higher
20.3%
Healthcare
Insured population
92%
ZIP details
Local time 00:46:01(ET)
LocationSecretary, MD
CountyDorchester
Area code
410443667
TimezoneEastern Time (ET)
Coordinates38.6075724, -75.9471133
Land area0.3 sq miles(754,358 m²)

Map of ZIP Code 21664 — Secretary, MD

Map of Secretary, MD
ZIP code 21664 is a PO Box. This map shows Secretary, Maryland.

Nearby ZIP codes

ZIP codes near 21664.

216312164321835216732165921655

Data Sources & Citations

The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:

  • United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
  • United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS