ZIP Code 21090 - Linthicum Heights Maryland

ZIP Code 21090 is located in Linthicum Heights Maryland. Portions of 21090 are also in Linthicum. 21090 is entirely within Anne Arundel County. Regionally, it is located in Metro Baltimore.

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ZIP Code 21090 Quick Stats

ZIP Code NameLinthicum Heights
Primary CountyAnne Arundel County
ZIP Code TypeStandard
Population (2022)10,346
Area Code(s)410 / 443 / 667
Current Time

ZIP Code 21090 Map

21090 Demographics

21090 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in Maryland based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 21090 is White. The majority race/ethnicity attending public schools in 21090 is White. The current unemployment level in 21090 is 3.0%.

Population Growth Rate0.00%
Population Density1,520 People per Square Mile
Total Households3,733
Percentage High Income Households4.0%
Median Household Income (2021)$106,793
Average Adjusted Gross Income (2021)$326,970
Current Unemployment Rate (May 2024)3.0%
Majority Race/EthnictyWhite - 91.15%
Public School Majority Race/EthnictyWhite - 49.60%

21090 Race/Ethnicty Breakdown

Native American130.13%
Hawaiian/Pac. Islander00%

21090 Public School Race/Ethnicty Breakdown

Native American30.16%
Hawaiian/Pac. Islander50.27%

21090 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College5228.38%
Bachelor Degree1,06817.15%
High School Diploma2,07533.32%
No High School Diploma1382.22%
GED or Alternate2804.5%
1 or More Years of College96615.51%
Associates Degree4767.64%
Masters Degree5548.9%
Professional Degree791.27%
Doctorate Degree691.11%

21090 Geography

Adjacent ZIP Codes
Cities/Towns in 21090
RegionMetro Baltimore
Metropolitan/Micropolitan Stat AreaBaltimore-Columbia-Towson, MD
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area7 Square Miles

21090 Politics

US Congressional Districts in 21090
Maryland State Senate Districts in 21090
Maryland State House of Delegates Districts in 21090

21090 Schools

School Districts in 21090
Elementary Schools in 21090
Middle Schools in 21090
High Schools in 21090

21090 Weather and Climate Data

Plant Hardiness ZoneZone 7b: 5F to 10F
Average First Frost DateOctober 21 - 31
Average Last Frost DateApril 11 - 20
Koppen-Geiger Climate ZoneCfa - Humid Subtropical Climate
Ecoregion65n - Chesapeake Rolling Coastal Plain

21090 Annual Climate Data

Avg Min Temp (°F)25273543536267665946372946
Avg Max Temp (°F)42465566758488867968574766
Avg Precip (In.)3.493.033.973.114.033.533.923.874.

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