Callaway, MD 20620 ZIP Code Profile

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Callaway, MD

ZIP Code 20620: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Callaway, MD 20620

  • ZIP Code Type: STANDARD
  • County: Saint Marys County
  • Centroid: Latitude 38.235, Longitude -76.522
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 51
  • PO Box Addresses: 203
  • Residential Addresses: 413
    • Multi-Family Addresses: 0
    • Single Family Addresses: 413

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

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Callaway, MD 20620 Data & Demographics (As of July 1, 2018)


Total Population 1,649
Population in Households 1,641
Population in Familes 1,413
Population in Group Qrtrs 8
Population Density1 400
Diversity Index2 36


Median Household Income $116,489
Average Household Income $132,954
Per Capita Income $48,247


Total Housing Units 642 (100%)
Owner Occupied HU 446 (69.5%)
Renter Occupied HU 150 (23.4%)
Vacant Housing Units 46 ( 7.2%)
Median Home Value $389,916
Average Home Value $436,323


Total Households 596
Average Household Size 2.75
Family Households 444
Average Family Size 3
  1. Population Density = Total Population per square mile.
  2. 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 0.9% 1.02%
Households 0.82% 0.92%
Families 0.73% 0.89%
Median Household Income   2.26%
Per Capita Income   3.15%

Callaway, MD 20620 - Peer Comparisons by Rank and Percentile

The table below compares 20620 to the other 448 ZIP Codes in Maryland by rank and percentile using July 1, 2018 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 # 321 29th
Population Density # 226 50th
Diversity Index # 254 43rd
Median Household Income # 67 85th
Per Capita Income # 100 78th

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

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