Cobb Island, Maryland Demographics & Population 2026
During the 2020–2024 ACS period, Cobb Island, Maryland had a total population of 916, the 343rd largest community in Maryland. The poverty rate is 2.3%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- An exceptionally low poverty rate of 2.3% — among the lowest in Maryland.
- Only 9.1% of adults have a bachelor's degree, well below the national average of 35.7%.
Cobb Island Quick Facts
How Cobb Island Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 1,162 | 916 | -21.2% |
| Median home value | $246,100 | $275,000 | +11.7% |
How Cobb Island Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 68 | National average: 61
Education
Educational Attainment (Adults 25+)
Cobb Island Rankings in Maryland
Explore Maryland Rankings
Other Cities in Charles County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Waldorf | 82,943 | $116,089 | 7.7% | $407,600 |
| Bensville | 15,848 | $170,072 | 5.4% | $521,300 |
| La Plata | 10,683 | $121,208 | 6.6% | $428,400 |
| Bryans Road | 9,371 | $118,361 | 2.8% | $377,300 |
| Indian Head | 4,055 | $89,063 | 9.7% | $303,700 |
| Hughesville | 2,098 | $106,250 | 1.7% | $489,100 |
| Potomac Heights | 1,351 | $71,786 | 9.6% | $115,800 |
| Pomfret | 747 | $118,914 | 0.0% | $406,900 |
| Bryantown | 325 | $104,271 | 0.0% | $517,600 |
| Rock Point | 244 | N/A | 26.6% | N/A |
Cities Similar to Cobb Island
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Queenstown | 907 | $122,031 | $384,800 | 37.5% | 14.2% |
| Callaway | 930 | $160,341 | $364,700 | 29.2% | 5.8% |
| Garrett Park | 932 | $250,000+ | $1,005,700 | 88.3% | 2.3% |
| Pylesville | 933 | $173,171 | $649,100 | 26.7% | 0.0% |
| Lonaconing | 889 | $54,250 | $89,400 | 20.6% | 20.9% |
A note before these figures: with a population of 916, Cobb Island's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Cobb Island is a small community located in Maryland, within Charles County. The total population is 916. It ranks as the 343rd most populous out of 527 Census-designated places in Maryland.
Age Demographics
The median age in Cobb Island is 50.0 years. This is 27% higher than the state median of 39.4 years.
Economy, Income & Housing
The poverty rate stands at 2.3%. This is 76% lower than the state poverty rate of 9.4%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The survey records no unemployed residents in Cobb Island, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $275,000. Housing costs are 35% lower than the state median of $419,900. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 48% higher than the state average of 67.6%.
Race & Ethnicity
Cobb Island has a predominantly White (non-Hispanic) population, comprising 92.0% of all residents. Asian residents account for 2.2%. The White (non-Hispanic) population is significantly higher than the state average (92.0% vs 46.6%). The Asian population (2.2%) is well below the state average of 6.5%.
Education
9.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 79% lower than the state rate of 43.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.6%.
Data Sources & Methodology
All demographic data for Cobb Island, Maryland is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Maryland state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 527 Census-designated places in Maryland. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Cobb Island, Maryland?
Cobb Island, Maryland has a population of 916 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Cobb Island, MD?
The Census Bureau does not publish a reliable median household income estimate for Cobb Island — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in Cobb Island, MD?
The poverty rate in Cobb Island is 2.3%. This means approximately 21 residents live below the federal poverty line.
What is the racial makeup of Cobb Island, Maryland?
Cobb Island's population is 92.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 2.2% Asian.
What is the median home value in Cobb Island, MD?
The median home value in Cobb Island is $275,000.
How educated is Cobb Island, Maryland?
9.1% of adults (25+) in Cobb Island hold a bachelor's degree or higher, and 6.9% hold a graduate or professional degree.