US ZIP Code
20625

Cobb Island, MD

Charles County  ·  Maryland

● Active
👥 1,135 Population ↑ 76% since 2019
💰 $161,000 Median HH Income
▲ 111% above avg ↑ 69% since 2019
🎂 45.2 Median Age ↑ 16% since 2019
🏠 $244,400 Median Home Value
▼ 12% below avg ↓ 26% since 2019
🎓 12.7% College Grads
▼ 67% below avg
📊 4.8% Unemployment
≈ Avg ↑ 40% since 2019
ZIP Code Details
ZIP Code20625
CityCobb Island
StateMaryland (MD)
CountyCharles County
Area Code227/240/301
Latitude38.257481
Longitude-76.84453
TimezoneNew York (DST)
FIPS24017
ZIP TypePO Box
StatusActive
People & Population (ACS 2023)
♂ Male 48.0% (545) Female 52.0% (590) ♀

Race & Ethnicity

White: 96%Asian: 1.8%Other: 2.3%Race
White96.0%
Asian1.8%
Other2.3%

Age Breakdown

Under 5
3%
5–17
14%
18–24
7%
25–44
26%
45–64
50%

Key Indicators

Median Age45.2 yrs ↑ 16% since 2019
Avg Household Size2.85
Below Poverty1.9% ▼ 82% below avg
College Grads12.7% ▼ 67% below avg
Unemployment4.8% ≈ Avg
HS Graduate407 (46.9%)
Some College184 (21.2%)
Associates167 (19.2%)
Bachelors71 (8.2%)
Graduate Degree39 (4.5%)

Education

HS Grad: 46.9%Some College: 21.2%Associates: 19.2%Bachelors: 8.2%Graduate: 4.5%Edu
HS Grad46.9%
Some College21.2%
Associates19.2%
Bachelors8.2%
Graduate4.5%
Housing & Income

Housing Tenure

Owner: 85.2%Renter: 14.8%Tenure
Owner85.2%
Renter14.8%

Home Value Distribution

$200k–300k
63%
$300k–500k
28%
Over $500k
9%

Financials

Median HH Income$161,000 ▲ 111% above avg ↑ 69% since 2019
Median Home Value$244,400 ▼ 12% below avg ↓ 26% since 2019
Home/Income Ratio1.5x (nat avg ~3.5x)
Total Units514
Vacant Units116
Avg HH Size2.85

Income Distribution

$50k–75k
34%
$75k–100k
4%
$100k–150k
11%
$150k–200k
39%
Over $200k
12%
Employment & Commute

How People Get to Work

Drove Alone
89%
Public Transit
7%
Work From Home
4%

Commute Time

Under 15 min
9%
15–30 min
3%
30–45 min
28%
Over 45 min
59%
Housing Stock

Year Built

Before 1940
3%
1960s–1970s
4%
1980s–1990s
20%
2000+
72%

Summary

Total Units514
Vacant116
Owner Occupied85.2%
Renter Occupied14.8%
Avg HH Size2.85
Frequently Asked Questions
ZIP code 20625 is in Cobb Island, MD, in Charles County.
ZIP code 20625 is located in Maryland (MD).
ZIP code 20625 is in Charles County, MD.
ZIP 20625 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 20625 is 1,135 people (ACS 2023).
The median household income in ZIP code 20625 is $161,000 (ACS 2023).
The median home value in ZIP 20625 is $244,400 (ACS 2023).
About ZIP Code 20625

ZIP code 20625 is located in Cobb Island, Maryland, within Charles County. With a population of 1,135, this is a sparsely populated ZIP code with a mature community — the median age is 45.2 years. Economically, 20625 is a affluent ZIP code: the median household income of $161,000 is more than double the national average.

Real estate in ZIP code 20625 represents an affordable housing market. The median home value of $244,400 is near the national average. Homeownership is strong here — 85.2% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have decreased by 26% since 2019.

The population of 20625 is primarily White (95.95%). Residents are less-educated — 12.7% hold a bachelor's degree or higher, which is well below the national average. Poverty affects a relatively small share of residents at 1.9%. Household income has grown by 69% since 2019.

The unemployment rate in 20625 stands at 4.8%, which is near the national average. As in most parts of the country, driving alone is the dominant commute mode at 72%.

Overall, ZIP code 20625 in Cobb Island, MD is characterized as affluent, less-educated, a mature community, and predominantly owner-occupied. With 1,135 residents, a median household income of $161,000, and a median home value of $244,400, it offers a clear picture of life in this part of Maryland.