Middle River, MD 21220 ZIP Code Profile

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Middle River, MD

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ZIP Code 21220: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Middle River, MD 21220

Acceptable Alternative
Baltimore, MD 21220

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 775
  • Single Family Addresses: 14,316
  • Multi-Family Addresses: 1,924
  • County: Baltimore County
  • Centroid: Latitude 39.343, Longitude -76.413
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


21220 ZIP Code Map

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Middle River, MD 21220 Data & Demographics (As of July 1, 2015)


Total Population 39,774
Population in Households 39,633
Population in Familes 31,641
Population in Group Qrtrs 141
Population Density1 1,604
Diversity Index2 53


Total Households 15,366
Average Household Size 2.58
Family Households 10,353
Average Family Size 3


Total Housing Units 16,566 (100%)
Owner Occupied HU 9,686 (58.5%)
Renter Occupied HU 5,680 (34.3%)
Vacant Housing Units 1,200 ( 7.2%)
Median Home Value $222,155
Average Home Value $260,004


Median Household Income $56,022
Average Household Income $73,113
Per Capita Income $28,308
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.38% 0.48%
Households 0.36% 0.48%
Families 0.23% 0.38%
Median Household Income   2.39%
Per Capita Income   2.27%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Middle River, MD 21220 - Peer Comparisons by Rank and Percentile

The table below compares 21220 to the other 440 ZIP Codes in Maryland by rank and percentile using July 1, 2015 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 36 92nd
Population Density1 # 127 71st
Diversity Index2 # 124 72nd
Median Household Income # 336 24th
Per Capita Income # 315 29th

Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.