Callaway, MD 20620 ZIP Code Profile

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Callaway, MD

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ZIP Code 20620: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Callaway, MD 20620

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 76
  • Single Family Addresses: 422
  • Multi-Family Addresses: 0
  • County: St. Mary's County
  • Centroid: Latitude 38.235, Longitude -76.522
  • 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.


20620 ZIP Code Map

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Callaway, MD 20620 Data & Demographics (As of July 1, 2016)


Total Population 1,678
Population in Households 1,670
Population in Familes 1,431
Population in Group Qrtrs 8
Population Density1 369
Diversity Index2 36


Total Households 607
Average Household Size 2.75
Family Households 451
Average Family Size 3


Total Housing Units 652 (100%)
Owner Occupied HU 468 (71.8%)
Renter Occupied HU 139 (21.3%)
Vacant Housing Units 45 ( 6.9%)
Median Home Value $366,393
Average Home Value $397,970


Median Household Income $111,495
Average Household Income $122,201
Per Capita Income $44,382
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.45% 1.47%
Households 1.33% 1.38%
Families 1.22% 1.34%
Median Household Income   1.16%
Per Capita Income   1.55%
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.

Callaway, MD 20620 - Peer Comparisons by Rank and Percentile

The table below compares 20620 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 # 323 29th
Population Density1 # 234 49th
Diversity Index2 # 244 47th
Median Household Income # 64 86th
Per Capita Income # 110 76th

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

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