Zip Code 21758 Map and Profile

Official Zip Code NameKnoxville
Zip Code StateMaryland
Zip Code TypeNon-Unique
Primary County: Frederick
Secondary County: Washington
Area Code227 / 240 / 301
Current Population:4921
Racial Majority:White 88.3%
Public School Racial Majority:White 91.8%
Unemployment Rate:4.3%
Median Household Income$66648
Average Adjusted Gross Income$83020
School Test Performance:Above Average
Average Commute Time42.1 Minutes
Time Zone:Eastern Standard Time
Elevation Range364 - 873 ft.
Area38 Sqm.
Coordinates(Y,X)39.34743800, -77.66059100

Zip Code 21758 Description

Zip Code 21758 is located in the state of Maryland in the Washington D.C. metro area. Zip code 21758 is primarily located in Frederick County. Portions of 21758 are also located in Washington County. The official US Postal Service name for 21758 is KNOXVILLE, Maryland. Portions of zip code 21758 are contained within or border the city limits of Rosemont, MD, Brunswick, MD, and Harpers Ferry, WV. Zip code 21758 is within area code 301 and area code 240. 21758 can be classified socioeconically as a Middle Class class zipcode in comparison to other zipcodes in Maryland.

The current unemployment level in 21758 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 21758 increased to 4921 from 4169 over the past 10 years. The majority ethnicity residing in 21758 is White while the majority ethnicity attending 21758 public schools is White. 30.6% of students in 21758 public schools receive or are eligible to participate in free or reduced lunch programs.

 White 4202 88.3% 4313 -3%
 Black Or African American 330 6.93% 281 +17%
 Hispanic 147 3.09% 127 +16%
 American Indian Or Alaskan Native 29 0.61% 8 +263%
 Asian 13 0.27% 70 -81%
 Native Hawaiian & Other Pacific Islander 0 0% 1 -100%
 Other Race 8 0% 8 -100%
 Two Or More Races 113 0.8% 113 -66%

Zip Code 21758 Race/Ethnicity

 White 91.8%
 Black Or African American 2.6%
 Hispanic 3.4%
 Asian 0%
 Hawaii/Pacific Islander 0%
 American Indian Or Alaskan Native 0.4%
 Two or More Races 1.7%

Zip Code 21758 Public School Race/Ethnicity Profile

Total Population49214169
Male Population49.80%
Female Population50.20%
Total Households1749
Test Score PerformanceAbove Average
Percentage of Students Eligible For
Free or Reduced Lunch
Percentage of Public Schools with
Title 1 Status
Median Household Income$66648
Income Under $50K Per Year31.00%
Income $50K to $100K Per Year42.40%
Income Above $100K Per Year26.60%
21758 US Congressional District
DistrictRepresentativeParty Affiliation
Maryland District 6David TroneDemocrat
Maryland District 8Jamie RaskinDemocrat
Related Maps: Map of All Maryland Congressional Districts

Average Real Estate Asking Price$316867
Average Real Estate Sale Price$213128
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 6b: -5F to 0F
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 21758 Annual Climate Data

Avg Min Temp (°F)22243241516064625543342743
Avg Max Temp (°F)41455566768488868069564666
Avg Precip (In.)2.852.563.53.283.653.63.643.533.592.913.122.9239.15
Core Based Statistical
Area (CBSA)
Washington-Arlington-Alexandria, DC-VA-MD-WV
CBSA Type21758
CBSA Population5500613
Time ZoneEastern Standard Time
IANA Time ZoneAmerica/New_York
Follows DSTYes
GMT Difference-5 Hours
List of High Schools in Zipcode 21758
Brunswick High SchoolFrederick
List of Middle Schools in Zipcode 21758
Brunswick Middle SchoolFrederick
List of Elementary Schools in Zipcode 21758
Brunswick Elementary SchoolFrederick
Valley Elementary SchoolFrederick