Cobb Island, MD 20625 ZIP Code Profile

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Cobb Island, MD

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ZIP Code 20625: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Cobb Island, MD 20625

  • ZIP Code Type: PO BOX
  • Businesses Addresses: 3
  • Single Family Addresses: 1
  • Multi-Family Addresses: 0
  • County: Charles County
  • Centroid: Latitude 38.26, Longitude -76.844
  • 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.


20625 ZIP Code Map

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Cobb Island, MD 20625 Data & Demographics (As of July 1, 2016)


Total Population 1,116
Population in Households 1,116
Population in Familes 875
Population in Group Qrtrs 0
Population Density1 2,222
Diversity Index2 22


Total Households 474
Average Household Size 2.35
Family Households 297
Average Family Size 3


Total Housing Units 642 (100%)
Owner Occupied HU 383 (59.7%)
Renter Occupied HU 91 (14.2%)
Vacant Housing Units 168 (26.2%)
Median Home Value $244,130
Average Home Value $340,339


Median Household Income $62,651
Average Household Income $85,523
Per Capita Income $36,324
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.8% 1.0%
Households 0.8% 1.03%
Families 0.61% 0.93%
Median Household Income   2.05%
Per Capita Income   2.32%
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.

Cobb Island, MD 20625 - Peer Comparisons by Rank and Percentile

The table below compares 20625 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 # 349 24th
Population Density1 # 102 78th
Diversity Index2 # 353 23rd
Median Household Income # 290 36th
Per Capita Income # 210 54th

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

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