West River, MD 20778 ZIP Code Profile

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West River, MD

ZIP Code 20778: Basic Data & USPS Preferred City Name

Preferred Name, USPS
West River, MD 20778

  • ZIP Code Type: STANDARD
  • County: Anne Arundel County
  • Centroid: Latitude 38.834, Longitude -76.564
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 33
  • PO Box Addresses: 19
  • Residential Addresses: 736
    • Multi-Family Addresses: 0
    • Single Family Addresses: 736

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic 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 demographic data.


20778 ZIP Code Map

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West River, MD 20778 Data & Demographics (As of July 1, 2017)


Total Population 2,072
Daytime Population: Workers 610
Daytime Population: Residents 872
Total Daytime Population (TDP) 1,482
Ratio TDP/Total Population1 0.72
Population in Households 2,066
Population in Familes 1,810
Population in Group Qrtrs 6
Population Density2 225
Diversity Index3 31


Median Household Income $106,792
Average Household Income $146,880
Per Capita Income $53,688


Total Housing Units 825 (100%)
Owner Occupied HU 656 (79.5%)
Renter Occupied HU 100 (12.1%)
Vacant Housing Units 69 ( 8.4%)
Median Home Value $497,802
Average Home Value $598,323


Total Households 756
Average Household Size 2.73
Family Households 582
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 0.41% 0.55%
Households 0.28% 0.47%
Families 0.17% 0.44%
Median Household Income   1.4%
Per Capita Income   2.0%

West River, MD 20778 - Peer Comparisons by Rank and Percentile

The table below compares 20778 to the other 456 ZIP Codes in Maryland by rank and percentile using July 1, 2017 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 # 307 33rd
Population Density # 287 37th
Diversity Index # 287 38th
Median Household Income # 90 80th
Per Capita Income # 54 88th

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

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