Middle River, MD 21220 ZIP Code Profile

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Middle River, MD

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Preferred City Name & Primary Data

Preferred Name, USPS
Middle River, MD 21220

Acceptable Alternative
Baltimore, MD 21220

Primary Data:

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 778
  • Single Family Addresses: 14,080
  • Multi-Family Addresses: 2,130
  • County: Baltimore County
  • Centroid: Latitude 39.343, Longitude -76.413
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

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

The table below compares 21220 to the other 441 ZIP Codes in Maryland by rank and percentile using July 1, 2014 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 # 132 70th
Diversity Index2 # 124 72nd
Median Household Income # 330 25th
Per Capita Income # 327 26th

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


Middle River, MD 21220 Data & Demographics (As of July 1, 2014)


Total Population 39,419
Population in Households 39,279
Population in Familes 31,460
Population in Group Qrtrs 140
Population Density1 1,403
Diversity Index2 52


Total Households 15,257
Average Household Size 2.57
Family Households 10,271
Average Family Size 3


Total Housing Units 16,464 (100%)
Owner Occupied HU 9,683 (58.8%)
Renter Occupied HU 5,574 (33.9%)
Vacant Housing Units 1,207 ( 7.3%)
Median Home Value $216,003
Average Home Value $253,612


Median Household Income $54,759
Average Household Income $69,972
Per Capita Income $27,145
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population 0.32% 0.42%
Households 0.32% 0.42%
Families 0.15% 0.29%
Median Household Income   2.34%
Per Capita Income   2.67%
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.

Information Updates

The Demographic Data for the 1,273 Maryland cities, towns, counties, ZIP Codes and Census Designated Places (CDPs) profiled in this gazetteer is updated annually. Last Update: July 1, 2014.

The ZIP Code maps and the data regarding the number of residential and business addresses in each ZIP Code are updated four times per year. Last Update: November 1, 2014.

The information on the 33,352 Maryland Physical, Cultural and Historic Features is updated six times per year. Last Update: December 2, 2014.

The School Attendance Zone Maps for 1,352 Maryland public schools are updated four times per year. Last Update: October 6, 2014.