ZIP Code 21220 - Middle River Maryland

ZIP Code 21220 is located in Middle River Maryland. Portions of 21220 are also in Bowleys Quarters and Rossville. 21220 is entirely within Baltimore County. Regionally, it is located in Metro Baltimore.

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ZIP Code 21220 Quick Stats

ZIP Code NameMiddle River
Primary CountyBaltimore County
ZIP Code TypeStandard
Population (2022)42,652
Area Code(s)410 / 443 / 667
Current Time

ZIP Code 21220 Map

21220 Demographics

21220 can be classified socioeconomically as Lower 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 21220 is White. The majority race/ethnicity attending public schools in 21220 is African American. The current unemployment level in 21220 is 3.7%.

Population Growth Rate2.93%
Population Density1,298 People per Square Mile
Total Households14,922
Percentage High Income Households2.8%
Median Household Income (2021)$72,724
Average Adjusted Gross Income (2020)$61,040
Current Unemployment Rate (April 2024)3.7%
Majority Race/EthnictyWhite - 61.19%
Public School Majority Race/EthnictyAfrican American - 45.47%

21220 Race/Ethnicty Breakdown

Native American580.14%
Hawaiian/Pac. Islander570.14%

21220 Public School Race/Ethnicty Breakdown

Native American170.48%
Hawaiian/Pac. Islander50.14%

21220 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College2,3199.97%
Bachelor Degree2,56111.01%
High School Diploma9,26539.82%
No High School Diploma5332.29%
GED or Alternate1,5856.81%
1 or More Years of College3,87516.66%
Associates Degree1,8087.77%
Masters Degree9273.98%
Professional Degree2260.97%
Doctorate Degree1660.71%

21220 Geography

Adjacent ZIP Codes
Cities/Towns in 21220
RegionMetro Baltimore
Metropolitan/Micropolitan Stat AreaBaltimore-Columbia-Towson, MD
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area33 Square Miles

21220 Politics

US Congressional Districts in 21220
Maryland State Senate Districts in 21220
Maryland State House of Delegates Districts in 21220

21220 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
Ecoregion63b - Chesapeake-Pamlico Lowlands and Tidal Marshes

21220 Annual Climate Data

Avg Min Temp (°F)25273444546368665947383046
Avg Max Temp (°F)42465566758488868068574766
Avg Precip (In.)3.693.134.283.514.773.894.194.254.383.563.683.7147.05

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