Data Last Updated: June 1, 2023

ZIP Codes for City of Rocky Ridge, MD


    
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Counties:	FREDERICK, MD
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 Code	Type	Population	% of Population	Aliases
21778	Standard	1,094	100.00%

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 population	544
Female population	550
Median age (years)	45.1
White Population	1,061
Black Population	0
Indian Population	4
Asian Population	4
Hawaiian Population	0
Hispanic Population	24
Median age (Male)	43.8
Median age (Female)	46.5
Total households	409
Family households (families)	310
Average household size	2.67
Average family size	3
Total housing units	438

* 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.

References

U.S. Postal Service [Last Updated: 2/1/2023], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 2/1/2023], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov/
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010], https://www.census.gov