Cobb Island, Maryland

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Population in 2010: 1,166.
Males: 575  (49.4%)
Females: 591  (50.6%)
Median resident age:

47.0 years
Maryland median age:

39.7 years

Zip codes: 20625, 20664.

Cobb Island Zip Code Map
Estimated median household income in 2022: $115,880
Cobb Island:

$115,880
MD:

$94,991

Estimated per capita income in 2022: $47,292

Cobb Island CDP income, earnings, and wages data

Estimated median house or condo value in 2022: $399,500
Cobb Island:

$399,500
MD:

$398,100

Mean prices in 2022: all housing units: $308,957; detached houses: $309,017
March 2022 cost of living index in Cobb Island: 132.0 (high, U.S. average is 100)
Percentage of residents living in poverty in 2022: 1.6%

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  • Races in Cobb Island, MD (2022)
    • 1,15787.6%White alone
    • 574.3%Two or more races
    • 171.3%Asian alone

Races in Cobb Island detailed stats: ancestries, foreign born residents, place of birth



According to our research of Maryland and other state lists, there were 5 registered sex offenders living in Cobb Island, Maryland as of May 30, 2024.
The ratio of all residents to sex offenders in Cobb Island is 169 to 1.


Recent articles from our blog. Our writers, many of them Ph.D. graduates or candidates, create easy-to-read articles on a wide variety of topics.

Ancestries: German (26.7%), American (21.8%), Welsh (11.2%), Irish (10.9%), Italian (9.5%), English (5.3%).

Current Local Time: EST time zone

20 residents are foreign born

This place:

1.5%
Maryland:

15.7%

Nearest city with pop. 50,000+: Dale City, VA (37.6 miles , pop. 55,971).

Nearest city with pop. 200,000+: Washington, DC (45.8 miles , pop. 572,059).

Nearest city with pop. 1,000,000+: Philadelphia, PA (150.8 miles , pop. 1,517,550).

Nearest cities:

Rock Point, MD (0.9 miles),
District 7, Milestown, MD (2.0 miles ),
Colonial Beach, VA (2.5 miles ),
Potomac Mills, VA (2.9 miles ),
District 3, Leonardtown, MD (3.3 miles ),
Dahlgren Center, VA (3.3 miles ),
Leonardtown, MD (3.4 miles ),
Montross, VA (3.4 miles )

Latitude: 38.26 N, Longitude: 76.85 W

Distribution of median household income in Cobb Island, MD in 2022
Distribution of house value in Cobb Island, MD in 2022
Unemployment in December 2023:
Here:

2.1%
Maryland:

2.0%
Air pollution and air quality trends
(lower is better)
AQI Ozone
Air Quality Index

Air Quality Index (AQI) level in 2022 was 55.7. This is better than average.

City:

55.7
U.S.:

72.6
Ozone Level

Ozone [ppb] level in 2022 was 30.4. This is about average. Closest monitor was 17.0 miles away from the city center.

City:

30.4
U.S.:

33.3

Tornado activity:

Cobb Island-area historical tornado activity is near Maryland state average. It is 7% smaller than the overall U.S. average.

On 4/28/2002, a category F4 (max. wind speeds 207-260 mph) tornado 24.2 miles away from the Cobb Island place center killed 3 people and injured 122 people and caused $124 million in damages.

On 11/2/1966, a category F3 (max. wind speeds 158-206 mph) tornado 21.1 miles away from the place center injured 2 people and caused between $5000 and $50,000 in damages.

Earthquake activity:

Cobb Island-area historical earthquake activity is significantly above Maryland state average. It is 58% smaller than the overall U.S. average.

On 8/23/2011 at 17:51:04, a magnitude 5.8 (5.8 MW, Depth: 3.7 mi, Class: Moderate, Intensity: VI - VII) earthquake occurred 64.0 miles away from Cobb Island center
On 8/25/2011 at 05:07:52, a magnitude 4.5 (4.5 ML, Depth: 4.2 mi, Class: Light, Intensity: IV - V) earthquake occurred 64.6 miles away from the city center
On 12/9/2003 at 20:59:14, a magnitude 4.5 (4.5 MB, 4.5 LG) earthquake occurred 74.1 miles away from Cobb Island center
On 12/9/2003 at 20:59:18, a magnitude 4.5 (4.5 ML, Depth: 6.2 mi) earthquake occurred 76.1 miles away from the city center
On 8/24/2011 at 00:04:36, a magnitude 4.2 (4.2 ML) earthquake occurred 64.8 miles away from Cobb Island center
On 1/16/1994 at 01:49:16, a magnitude 4.6 (4.6 MB, 4.6 LG, Depth: 3.1 mi) earthquake occurred 149.4 miles away from Cobb Island center
Magnitude types: regional Lg-wave magnitude (LG), body-wave magnitude (MB), local magnitude (ML), moment magnitude (MW)

Natural disasters:

The number of natural disasters in Charles County (21) is greater than the US average (15).
Major Disasters (Presidential) Declared: 16
Emergencies Declared: 5

Causes of natural disasters: Hurricanes: 7, Winter Storms: 6, Snowstorms: 4, Storms: 2, Tropical Storms: 2, Blizzard: 1, Flood: 1, Heavy Rain: 1, Ice Storm: 1, Snowfall: 1, Tornado: 1, Wind: 1, Other: 1 (Note: some incidents may be assigned to more than one category).

Hospitals and medical centers near Cobb Island:

  • WESTMORELAND REHABILITATION AND HEALTHCARE CENTER (Nursing Home, about 8 miles away; COLONIAL BEACH, VA)
  • MEDSTAR SAINT MARY'S HOSPITAL Acute Care Hospitals (about 12 miles away; LEONARDTOWN, MD)
  • ST. MARY'S NURSING CENTER INC (Nursing Home, about 12 miles away; LEONARDTOWN, MD)
  • CHARLOTTE HALL VETERANS HOME (Nursing Home, about 16 miles away; CHARLOTTE HALL, MD)

Airports located in Cobb Island:

Colleges/universities with over 2000 students nearest to Cobb Island:

  • College of Southern Maryland (about 23 miles; La Plata, MD; Full-time enrollment: 5,775)
  • University of Mary Washington (about 34 miles; Fredericksburg, VA; FT enrollment: 4,506)
  • Strayer University-Maryland (about 40 miles; Suitland, MD; FT enrollment: 2,748)
  • Prince George's Community College (about 44 miles; Largo, MD; FT enrollment: 8,537)
  • Northern Virginia Community College (about 45 miles; Annandale, VA; FT enrollment: 35,721)
  • George Washington University (about 46 miles; Washington, DC; FT enrollment: 18,928)
  • Strayer University-Virginia (about 46 miles; Arlington, VA; FT enrollment: 7,005)

Points of interest:

Click to draw/clear place borders

Notable locations in Cobb Island: Pirates Den Marina (A), Cobb Island Volunteer Fire Department and Emergency Medical Services (B). Display/hide their locations on the map

Charles County has a predicted average indoor radon screening level between 2 and 4 pCi/L (pico curies per liter) - Moderate Potential
Average household size:
This place:

2.3 people
Maryland:

2.6 people

Percentage of family households:
This place:

63.3%
Whole state:

67.1%

Percentage of households with unmarried partners:
This place:

7.2%
Whole state:

6.4%


Likely homosexual households (counted as self-reported same-sex unmarried-partner households)
  • Lesbian couples: 0.8% of all households
  • Gay men: 0.6% of all households

For population 15 years and over in Cobb Island:

Marital status in Cobb Island, MD
  • Never married: 16.0%
  • Now married: 74.0%
  • Separated: 0.0%
  • Widowed: 7.4%
  • Divorced: 2.6%

For population 25 years and over in Cobb Island:

  • High school or higher: 95.1%
  • Bachelor's degree or higher: 7.0%
  • Graduate or professional degree: 5.4%
Educational Attainment in 2022
School Enrollment by Level of School in 2022
Education Gini index (Inequality in education)
Here:

5.8
Maryland average:

12.7

Presidential Elections Results

Graphs represent county-level data. Detailed 2008 Election Results

Religion statistics for Cobb Island, MD (based on Charles County data)

Religions Adherents in 2010
Religions Adherents - Change between 2000 and 2010
ReligionAdherentsCongregations
Catholic26,14612
Evangelical Protestant18,32372
Mainline Protestant6,59328
Other1,5127
Black Protestant1,4899
Orthodox1001
None92,388-
Source: Clifford Grammich, Kirk Hadaway, Richard Houseal, Dale E.Jones, Alexei Krindatch, Richie Stanley and Richard H.Taylor. 2012. 2010 U.S.Religion Census: Religious Congregations & Membership Study. Association of Statisticians of American Religious Bodies. Jones, Dale E., et al. 2002. Congregations and Membership in the United States 2000. Nashville, TN: Glenmary Research Center. Graphs represent county-level data

Food Environment Statistics:

Number of grocery stores: 22
Here:

1.57 / 10,000 pop.
Maryland:

1.96 / 10,000 pop.
Number of supercenters and club stores: 2
Charles County:

0.14 / 10,000 pop.
Maryland:

0.07 / 10,000 pop.
Number of convenience stores (no gas): 16
Charles County:

1.14 / 10,000 pop.
Maryland:

1.22 / 10,000 pop.
Number of convenience stores (with gas): 31
Charles County:

2.21 / 10,000 pop.
State:

2.05 / 10,000 pop.
Number of full-service restaurants: 67
This county:

4.78 / 10,000 pop.
State:

5.40 / 10,000 pop.
Adult diabetes rate:
This county:

9.2%
State:

9.1%
Adult obesity rate:
This county:

31.9%
Maryland:

26.7%
Low-income preschool obesity rate:
This county:

13.0%
Maryland:

15.5%

8.84% of this county's 2021 resident taxpayers lived in other counties in 2020 ($64,163 average adjusted gross income)

Here:

8.84%
Maryland average:

7.42%

0.09% of residents moved from foreign countries ($733 average AGI)
Charles County:

0.09%
Maryland average:

0.05%

Top counties from which taxpayers relocated into this county between 2020 and 2021:
from Prince George's County, MD  3.80% ($64,543 average AGI)
from District of Columbia, DC  0.50% ($64,138)
from St. Mary's County, MD  0.44% ($68,444)


8.30% of this county's 2020 resident taxpayers moved to other counties in 2021 ($68,972 average adjusted gross income)

Here:

8.30%
Maryland average:

7.91%

0.07% of residents moved to foreign countries ($634 average AGI)
Charles County:

0.07%
Maryland average:

0.04%

Top counties to which taxpayers relocated from this county between 2020 and 2021:
to Prince George's County, MD  1.84% ($56,578 average AGI)
to St. Mary's County, MD  0.84% ($67,660)
to Calvert County, MD  0.34% ($73,672)

Strongest AM radio stations in Cobb Island:

  • WWGB (1030 AM; daytime; 50 kW; INDIAN HEAD, MD; Owner: GOOD BODY MEDIA, LLC)
  • WPTX (1690 AM; 10 kW; LEXINGTON PARK, MD; Owner: SOMAR COMMUNICATIONS, INC.)
  • WTEM (980 AM; 50 kW; WASHINGTON, DC; Owner: AMFM RADIO LICENSES, L.L.C.)
  • WPGC (1580 AM; 50 kW; MORNINGSIDE, MD; Owner: INFINITY WPGC(AM), INC.)
  • WBIS (1190 AM; 50 kW; ANNAPOLIS, MD; Owner: NATIONS RADIO, LLC)
  • WCBM (680 AM; 50 kW; BALTIMORE, MD; Owner: WCBM MARYLAND, INC.)
  • WTOP (1500 AM; 50 kW; WASHINGTON, DC; Owner: BONNEVILLE HOLDING COMPANY)
  • WRVA (1140 AM; 50 kW; RICHMOND, VA; Owner: CLEAR CHANNEL BROADCASTING LICENSES, INC.)
  • WKCW (1420 AM; 50 kW; WARRENTON, VA; Owner: WAY BROADCASTING, INC.)
  • WMET (1150 AM; 50 kW; GAITHERSBURG, MD; Owner: BELTWAY ACQUISITION CORPORATION)
  • WTAR (850 AM; 50 kW; NORFOLK, VA; Owner: SINCLAIR COMMUNICATIONS)
  • WKDL (730 AM; 8 kW; ALEXANDRIA, VA; Owner: MEGA COMMUNICATIONS OF ALEXANDRIA LICENSEE, LLC)
  • WUST (1120 AM; daytime; 20 kW; WASHINGTON, DC)

Strongest FM radio stations in Cobb Island:

  • WGRQ (95.9 FM; COLONIAL BEACH, VA; Owner: TELEMEDIA BROADCASTING, INC.)
  • WSMD-FM (98.3 FM; MECHANICSVILLE, MD; Owner: SOMAR COMMUNICATIONS, INC.)
  • WKIK-FM (102.9 FM; CALIFORNIA, MD; Owner: SOMAR COMMUNICATIONS, INC.)
  • WWZZ (104.1 FM; WALDORF, MD; Owner: BONNEVILLE HOLDING COMPANY)
  • WMDM-FM (97.7 FM; LEXINGTON PARK, MD; Owner: SOMAR COMMUNICATIONS, INC.)
  • WBZS-FM (92.7 FM; PRINCE FREDERICK, MD; Owner: MEGA COMMUNICATIONS OF PRINCE FREDERICK LICENSEE, LLC)
  • WRAR-FM (105.5 FM; TAPPAHANNOCK, VA; Owner: RAPPAHANNOCK COMMUNICATIONS, INC.)
  • WBQB (101.5 FM; FREDERICKSBURG, VA; Owner: MID ATLANTIC NETWORK, INC.)
  • WNNT-FM (100.9 FM; WARSAW, VA; Owner: NORTHERN NECK & TIDEWATER COMMUNICATIONS, INC)

TV broadcast stations around Cobb Island:

  • WIAV-LP (Channel 58; WASHINGTON, DC; Owner: ASIAVISION, INC.)
  • W52AX (Channel 52; LEONARDTOWN, MD; Owner: SATELLITE VIDEO BROADCASTING)

Cobb Island fatal accident list:

Jan 18, 1987 07:10 PM, Us0301, Vehicles: 2, Persons: 3, Fatalities: 1
Jan 5, 1986 09:50 PM, Co0141, Vehicles: 1, Persons: 2, Fatalities: 1, Drunk persons involved: 1
Aug 22, 1981 07:51 PM, Vehicles: 1, Persons: 3, Fatalities: 1
Oct 28, 1978 00:37 AM, Vehicles: 1, Persons: 2, Fatalities: 1
Nov 27, 1978 04:33 PM, Vehicles: 1, Persons: 1, Fatalities: 1
Jul 9, 1978 11:00 PM, Vehicles: 1, Persons: 1, Fatalities: 1, Drunk persons involved: 1
  • National Bridge Inventory (NBI) Statistics
  • 2Number of bridges
  • 59ft / 18.4mTotal length
  • 2,000Total average daily traffic
  • 157Total average daily truck traffic
  • 2,200Total future (year 2011) average daily traffic

FCC Registered Broadcast Land Mobile Towers:

1
  • Fire House Main Ave & Bennett Rd (Lat: 38.264306 Lon: -76.852750), Call Sign: WNMG243, Licensee ID: L00032358,
    Assigned Frequencies: 155.085 MHz, 158.775 MHz, Grant Date: 07/16/2013, Expiration Date: 07/26/2023, Cancellation Date: 03/31/2016, Registrant: Charles County, Md, 10425 Audie Lane, La Plata, MD 20646, Phone: (301) 609-3550, Fax: (301) 609-3557, Email:


FCC Registered Maritime Coast & Aviation Ground Towers:

1
  • 17594 Oriole Dr (Lat: 38.262639 Lon: -76.843861), Type: Building, Overall height: 2 m, Call Sign: WXZ879, Licensee ID: L01019673,
    Assigned Frequencies: 156.450 MHz, 156.800 MHz, Grant Date: 08/23/2005, Expiration Date: 11/17/2015, Cancellation Date: 01/23/2016, Registrant: Charles R Chapman Iii, 17594 Oriole Dr, Cobb Island, MD 20625, Phone: (301) 259-4066, Fax: (301) 259-4016


FCC Registered Amateur Radio Licenses:

2
  • Call Sign: N3CMG, Licensee ID: L00574156, Grant Date: 10/25/1994, Expiration Date: 10/25/2004, Cancellation Date: 11/19/2002, Registrant: William J Graves Sr, 12102 Neale Sound Dr, Cobb Island, MD 20625

  • Call Sign: KB3SLK, Licensee ID: L01474749, Grant Date: 02/20/2019, Expiration Date: 03/16/2029, Certifier: Jacob W Rudy Iii, Registrant: Jacob W Rudy Iii, 12048 Neale Sound Dr, Cobb Island, MD 20625


2002 - 2018 National Fire Incident Reporting System (NFIRS) incidents

    Fire incident distribution by year Based on the data from the years 2002 - 2018 the average number of fire incidents per year is 23. The highest number of fires - 44 took place in 2006, and the least - 5 in 2014. The data has a rising trend.
    Fire incident types in Cobb Island, MD When looking into fire subcategories, the most incidents belonged to: Structure Fires (54.4%), and Outside Fires (32.8%).

    • Fire incident types reported to NFIRS in Cobb Island, MD
    • 20954.4%Structure Fires
    • 12632.8%Outside Fires
    • 287.3%Other
    • 215.5%Mobile Property/Vehicle Fires
See full National Fire Incident Reporting System statistics for Cobb Island, MD
Houses and condos Apartments
Most commonly used house heating fuel in houses and condos in Cobb Island, MD
  • 81.1%Electricity
  • 7.0%Solar energy
  • 5.9%Fuel oil, kerosene, etc.
  • 3.5%Wood
  • 2.4%Bottled, tank, or LP gas
Most commonly used house heating fuel in apartments in Cobb Island, MD
  • 100.0%Electricity


Cobb Island compared to Maryland state average:

  • Median house value below state average.
  • Unemployed percentage significantly below state average.
  • Black race population percentage significantly below state average.
  • Hispanic race population percentage significantly below state average.
  • Median age significantly above state average.
  • Foreign-born population percentage significantly below state average.
  • Renting percentage below state average.
  • Length of stay since moving in significantly above state average.
  • House age below state average.
  • Percentage of population with a bachelor's degree or higher significantly below state average.

Cobb Island on our top lists:

  • #40 on the list of "Top 100 low-educated but high-earning cities"
  • #85 on the list of "Top 101 counties with the highest percentage of residents relocating from foreign countries between 2010 and 2011 (pop. 50,000+)"
  • #86 on the list of "Top 101 counties with highest percentage of residents voting for Obama (Democrat) in the 2012 Presidential Election (pop. 50,000+)"
  • #90 on the list of "Top 101 counties with the best general health status score of residents (1-5), 3 years of data"
  • #92 on the list of "Top 101 counties with the highest percentage of residents that visited a dentist within the past year"
  • #96 on the list of "Top 101 counties with the lowest number of deaths per 1000 residents 2007-2013 (pop. 50,000+)"
There is 1 pilot and no other airmen in this city.
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Top Patent Applicants
Top Patent Applicants
  • Timmie Wayne Lamouroux (1)
  • Michael S. Smiroldo (1)

Total of 2 patent applications in 2008-2024.