Zip Code 21770 Map and Profile

Official Zip Code NameMonrovia
Zip Code StateMaryland
Zip Code TypeNon-Unique
Primary County: Frederick
Area Code227 / 240 / 301
Current Population:5164
Racial Majority:White 89.66%
Public School Racial Majority:White 83.1%
Unemployment Rate:4.3%
Median Household Income$100262
Average Adjusted Gross Income$104780
School Test Performance:Above Average
Average Commute Time35 Minutes
Time Zone:Eastern Standard Time
Elevation Range502 - 666 ft.
Area11 Sqm.
Coordinates(Y,X)39.35286200, -77.25663800

Zip Code 21770 Description

Zip Code 21770 is located in the state of Maryland in the Washington D.C. metro area. Zip code 21770 is primarily located in Frederick County. The official US Postal Service name for 21770 is MONROVIA, Maryland. Portions of zip code 21770 are contained within or border the city limits of Green Valley, MD, New Market, MD, and Linganore-Bartonsville, MD. Zip code 21770 is within area code 301 and area code 240. 21770 can be classified socioeconically as a Middle Class class zipcode in comparison to other zipcodes in Maryland.

The current unemployment level in 21770 is 4.3% which is higher than the current county unemployment level of 3.9% and is lower than the current state unemployment at 5.1% and higher than the current national unemployment rate at 4.3%.

According the 2010 US Census, the population of 21770 decreased to 5164 from 5460 over the past 10 years. The majority ethnicity residing in 21770 is White while the majority ethnicity attending 21770 public schools is White. 12.9% of students in 21770 public schools receive or are eligible to participate in free or reduced lunch programs.

 White 4893 89.66% 4742 +3%
 Black Or African American 95 1.74% 66 +44%
 Hispanic 264 4.84% 199 +33%
 American Indian Or Alaskan Native 0 0% 9 -100%
 Asian 62 1.14% 67 -7%
 Native Hawaiian & Other Pacific Islander 0 0% 1 -100%
 Other Race 3 0% 3 -100%
 Two Or More Races 77 2.62% 77 +86%

Zip Code 21770 Race/Ethnicity

 White 83.1%
 Black Or African American 1.6%
 Hispanic 9%
 Asian 1.4%
 Hawaii/Pacific Islander 0.1%
 American Indian Or Alaskan Native 0.1%
 Two or More Races 4.7%

Zip Code 21770 Public School Race/Ethnicity Profile

Total Population51645460
Male Population51.00%
Female Population49.00%
Total Households1739
Test Score PerformanceAbove Average
Percentage of Students Eligible For
Free or Reduced Lunch
Percentage of Public Schools with
Title 1 Status
Median Household Income$100262
Income Under $50K Per Year14.40%
Income $50K to $100K Per Year35.30%
Income Above $100K Per Year50.30%
21770 US Congressional District
DistrictRepresentativeParty Affiliation
Maryland District 8Jamie RaskinDemocrat
Related Maps: Map of All Maryland Congressional Districts

Average Real Estate Asking Price$340107
Average Real Estate Sale Price$344775
Current Unemployment Level 4.3%
Previous Month Unemployment Level4.5%
Unemployment Level 1 Year Ago5.5%
2012 Hardiness ZoneZone 7a: 0F to 5F
1990 Hardiness ZoneZone 6a: -10F to -5F
Köppen Climate ClassificationDfa - Humid Continental Hot Summers
Ecoregion 64c - Piedmont Uplands
Average First Frost DatesOctober 11 - 20
Average Last Frost DatesApril 21 - 31

Zip Code 21770 Annual Climate Data

Avg Min Temp (°F)22243240505964625543342743
Avg Max Temp (°F)40445465748286847867554565
Avg Precip (In.)3.342.673.753.414.474.023.723.34.063.593.433.242.97
Core Based Statistical
Area (CBSA)
Washington-Arlington-Alexandria, DC-VA-MD-WV
CBSA Type21770
CBSA Population5500613
Time ZoneEastern Standard Time
IANA Time ZoneAmerica/New_York
Follows DSTYes
GMT Difference-5 Hours
List of High Schools in Zipcode 21770
Linganore High SchoolFrederick
Urbana High SchoolFrederick
List of Middle Schools in Zipcode 21770
Windsor Knolls Middle SchoolFrederick