Elk Mills, MD 21920 ZIP Code Profile

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Elk Mills, MD

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ZIP Code 21920: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Elk Mills, MD 21920

  • ZIP Code Type: PO BOX
  • Businesses Addresses: 25
  • Single Family Addresses: 1
  • Multi-Family Addresses: 0
  • County: Cecil County
  • Centroid: Latitude 39.657, Longitude -75.827
  • 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.


21920 ZIP Code Map

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Elk Mills, MD 21920 Data & Demographics (As of July 1, 2016)


Total Population 185
Population in Households 184
Population in Familes 160
Population in Group Qrtrs 1
Population Density1 1,088
Diversity Index2 23


Total Households 65
Average Household Size 2.83
Family Households 50
Average Family Size 3


Total Housing Units 73 (100%)
Owner Occupied HU 50 (68.5%)
Renter Occupied HU 15 (20.5%)
Vacant Housing Units 8 (11.0%)
Median Home Value $258,333
Average Home Value $289,000


Median Household Income $73,783
Average Household Income $91,199
Per Capita Income $32,173
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.89% 0.53%
Households 0.76% 0.61%
Families 0.66% 0.4%
Median Household Income   2.97%
Per Capita Income   2.38%
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.

Elk Mills, MD 21920 - Peer Comparisons by Rank and Percentile

The table below compares 21920 to the other 455 ZIP Codes in Maryland by rank and percentile using July 1, 2016 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 # 422 7th
Population Density1 # 148 68th
Diversity Index2 # 344 24th
Median Household Income # 231 49th
Per Capita Income # 269 41st

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