Zip Code 21778 Map and Profile

Official Zip Code NameRocky Ridge
Zip Code StateMaryland
Zip Code TypeNon-Unique
Primary County: Frederick
Area Code227 / 240 / 301
Current Population:1094
Racial Majority:White 73.18%
Unemployment Rate:5.2%
Median Household Income$62735
Average Adjusted Gross Income$71250
School Test Performance:Poor
Average Commute Time26.7 Minutes
Time Zone:Eastern Daylight Time
Elevation Range335 - 472 ft.
Area16 Sqm.
Coordinates(Y,X)39.61208200, -77.33369000

Zip Code 21778 Description

Zip Code 21778 is located in the state of Maryland in the Washington D.C. metro area. Zip code 21778 is primarily located in Frederick County. The official US Postal Service name for 21778 is ROCKY RIDGE, Maryland. Portions of zip code 21778 are contained within or border the city limits of . Zip code 21778 is within area code 240, area code 301 and area code 410. 21778 can be classified socioeconically as a Middle Class class zipcode in comparison to other zipcodes in Maryland.

The current unemployment level in 21778 is 5.2% which is higher than the current county unemployment level of 3.9% and is lower than the current state unemployment at 6.1% and lower than the current national unemployment rate at 6.0%.

According the 2010 US Census, the population of 21778 increased to 1094 from 1020 over the past 10 years. The majority ethnicity residing in 21778 is White while the majority ethnicity attending 21778 public schools is . % of students in 21778 public schools receive or are eligible to participate in free or reduced lunch programs.

 White 835 73.18% 1050 -20%
 Black Or African American 0 0% 0 +0%
 Hispanic 38 3.33% 24 +58%
 American Indian Or Alaskan Native 0 0% 4 -100%
 Asian 9 0.79% 4 +125%
 Native Hawaiian & Other Pacific Islander 0 0% 0 +0%
 Other Race 0 21.56% 0 +0%
 Two Or More Races 12 1.14% 12 +8%

Zip Code 21778 Race/Ethnicity

 White %
 Black Or African American %
 Hispanic %
 Asian %
 Hawaii/Pacific Islander %
 American Indian Or Alaskan Native %
 Two or More Races %

Zip Code 21778 Public School Race/Ethnicity Profile

Total Population10941020
Male Population49.70%
Female Population50.30%
Total Households409
Test Score PerformancePoor
Percentage of Students Eligible For
Free or Reduced Lunch
Percentage of Public Schools with
Title 1 Status
Median Household Income$62735
Income Under $50K Per Year35.70%
Income $50K to $100K Per Year42.00%
Income Above $100K Per Year22.30%
21778 US Congressional District
DistrictRepresentativeParty Affiliation
Maryland District 8Jamie RaskinDemocrat
Related Maps: Map of All Maryland Congressional Districts

Average Real Estate Asking Price$453000
Average Real Estate Sale Price$220800
Current Unemployment Level 5.2%
Previous Month Unemployment Level5.4%
Unemployment Level 1 Year Ago3.0%
2012 Hardiness ZoneZone 6b: -5F to 0F
1990 Hardiness ZoneZone 6a: -10F to -5F
Köppen Climate ClassificationDfa - Humid Continental Hot Summers
Ecoregion 64a - Triassic Lowlands
Average First Frost DatesOctober 11 - 20
Average Last Frost DatesApril 21 - 31

Zip Code 21778 Annual Climate Data

Avg Min Temp (°F)22243240505964625543342743
Avg Max Temp (°F)39445365758185847766554464
Avg Precip (In.)3.552.883.873.694.454.223.613.494.173.473.673.2644.34
Core Based Statistical
Area (CBSA)
Washington-Arlington-Alexandria, DC-VA-MD-WV
CBSA Type21778
CBSA Population5500613
Time ZoneEastern Daylight Time
IANA Time ZoneAmerica/New_York
Follows DSTYes
GMT Difference-5 Hours
List of High Schools in Zipcode 21778
Catoctin High SchoolFrederick
List of Middle Schools in Zipcode 21778
Thurmont Middle SchoolFrederick