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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Rocky Ridge, MD

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Area Code(s):240, 301
Timezone(s):Eastern (GMT -05:00)
City Population:1,094 (More Details)
CBSA:Washington-Arlington-Alexandria, DC-VA-MD-WV
Congressional District(s):08
Land Area:660 square miles (county)
Water Area:7 square miles (county)

1 ZIP Code

Rocky Ridge, MD ZIP Code Boundaries

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Rocky Ridge, MD Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Rocky Ridge, MD Demographic Information *

There is no Census data for the city of ROCKY RIDGE, MD. We have pulled information for the ZIP Code 21778 instead.
Total population**1,094
Male population544
Female population550
Median age (years)45.1
White Population1,061
Black Population0
Indian Population4
Asian Population4
Hawaiian Population0
Hispanic Population24
Median age (Male)43.8
Median age (Female)46.5
Total households409
Family households (families)310
Average household size2.67
Average family size3
Total housing units438
* Demographic data is based on 2010 Census for the City of ROCKY RIDGE.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  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],