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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Dowell, MD

Dowell, MD Covers 2 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 20629P.O. BoxCalvert535410 / 667 / 443
ZIP Code 20688StandardCalvert1,828410 / 667 / 443

Timezone(s):Eastern (GMT -05:00)
Counties:CALVERT, MD
Population:535 (More Details)
Male Population:273
Female Population:262
Median Age:48
ZIP Codes:2
Area Codes:3
Total Area:345 square miles (county)
Land Area:213 square miles (county)
Water Area:132 square miles (county)

Dowell, MD Demographic Information *

There is no Census data for the city of DOWELL, MD. We have pulled information for the ZIP Code 20629 instead.
Total population535
Male population273
Female population262
Median age (years)47.9
White Population475
Black Population38
Indian Population1
Asian Population13
Hawaiian Population0
Hispanic Population13
Median age (Male)47.4
Median age (Female)48.4
Total households246
Family households (families)157
Average household size2.17
Average family size2.68
Total housing units341
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  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],