ZIP Code Tabulation Area · Maryland

ZIP Code 20625: Cobb Island, MD

ZIP Code 20625 (Cobb Island, Charles County, Maryland) has an estimated 849 residents in 328 households. The median household income is —, the median home value is $245,300 and the median gross rent is —. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Some estimates have a large margin of error. 4 figures for this ZIP (population, households, home value, commute) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

849*

Margin of error ±449· estimate has a large margin of error

Median household income

—

Margin of error not available

Median home value

$245,300*

Margin of error ±$177,857· estimate has a large margin of error

Median gross rent

—

Margin of error not available

Median age

45.8 yrs

Margin of error ±14.3 yrs

Mean travel time to work

53.5 min*

Margin of error ±44.1 min· estimate has a large margin of error

How ZIP 20625 compares with Maryland and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 2062545.8 yrsMaryland39.4 yrsUnited States38.9 yrs

Median household income

ZIP 20625—Maryland$103,678United States$80,734

Per capita income

ZIP 20625$49,865Maryland$52,979United States$44,673

Poverty rate

ZIP 206252.5%Maryland9.4%United States12.5%

Unemployment rate

ZIP 206250.0%Maryland4.9%United States5.2%

Bachelor's degree or higher

ZIP 206252.4%Maryland43.4%United States35.7%

Median home value

ZIP 20625$245,300*Maryland$419,900United States$332,700

Median gross rent

ZIP 20625—Maryland$1,705/moUnited States$1,413/mo

Owner-occupied homes

ZIP 20625100.0%Maryland67.6%United States65.2%

Mean travel time to work

ZIP 2062553.5 min*Maryland31.1 minUnited States26.4 min

Worked from home

ZIP 206250.0%Maryland19.3%United States15.1%

All figures for ZIP 20625

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 20625 — ACS 2020–2024 5-year estimates
MeasureZIP 20625Margin of errorMarylandUnited States
Total population849*±4496,206,011334,922,499
Median age45.8 yrs±14.3 yrs39.4 yrs38.9 yrs
Households328*±2032,362,928129,227,496
Median household income——$103,678$80,734
Per capita income$49,865±$14,799$52,979$44,673
Poverty rate2.5%±3.5 pts9.4%12.5%
Unemployment rate0.0%±3.0 pts4.9%5.2%
Bachelor's degree or higher2.4%±5.4 pts43.4%35.7%
Median home value$245,300*±$177,857$419,900$332,700
Median gross rent——$1,705/mo$1,413/mo
Owner-occupied homes100.0%±0.0 pts67.6%65.2%
Mean travel time to work53.5 min*±44.1 min31.1 min26.4 min
Worked from home0.0%±3.0 pts19.3%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 20625
GroupZIP 20625MarylandUnited States
White alone, not Hispanic or Latino91.4%46.6%57.4%
Black or African American alone, not Hispanic or Latino0.0%28.9%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.1%0.5%
Asian alone, not Hispanic or Latino2.4%6.5%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.0%0.2%
Some other race alone, not Hispanic or Latino0.0%0.7%0.6%
Two or more races, not Hispanic or Latino6.2%4.6%4.3%
Hispanic or Latino (of any race)0.0%12.5%19.3%

Where ZIP 20625 is

State
Maryland
Main county
Charles County
Largest overlapping place
Cobb Island (100% of the ZIP's land area)
Land area
0.49 sq mi· about 1,733 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Charles County

20601 Waldorf, MD20602 Waldorf, MD20603 Bensville, MD20611 Charles County, MD20612 Benedict, MD20616 Bryans Road, MD20617 Bryantown, MD20622 Charles County, MD20632 Charles County, MD20637 Hughesville, MD20640 Charles County, MD20645 Charles County, MD20646 Charles County, MD20658 Charles County, MD20662 Charles County, MD20664 Charles County, MD20675 Pomfret, MD20677 Charles County, MD20693 Charles County, MD20695 Waldorf, MD

See every ZIP code in Maryland, or compare ZIP 20625 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.