Population 858 · Census ACS 2020–24
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Population and households in Cobb Island
Household size in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.01 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.28 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.70 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.60 | 2.77 | 2.68 | 2.65 |
| Change | +0.59 | +0.04 | +0.01 | −0.03 |
Households in Cobb Island average 2.60 people, about the same as the country as a whole (2.65). The typical household here is smaller than in the Washington area as a whole, where it has 2.77 people. Household size has climbed from 2.01 in 2006–10, but in a place this small, much of that may be survey noise rather than real change.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 55.1 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 50.4 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 38.9 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 45.6 | 39.2 | 40.6 | 40.1 |
| Change | −9.5 | +2.2 | +2.1 | +2.3 |
With a median age of 45.6, Cobb Island is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.0% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 9.8% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 13.2% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 6.7% | 10.4% | 11.7% | 11.6% |
| Change | +1.6 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single parents head only 6.7% of households in Cobb Island, well below the national share of 11.6%.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Cobb Island
Renters in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 15.3% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 18.8% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 8.2% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 0.1% | 36.3% | 32.4% | 34.8% |
| Change | −15.2 pts | +2.3 pts | +1.4 pts | +1.5 pts |
Cobb Island is overwhelmingly a place of homeowners: only 0.1% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among owners, 6.4% have paid off their mortgages, well below the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 16.7% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 35.0% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 37.2% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 36.1% | 5.9% | 7.1% | 9.6% |
| Change | +19.4 pts | −2.8 pts | −1.9 pts | −1.8 pts |
Vacancy is high in Cobb Island: 36.1% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1953 | 1977 | 1974 | 1974 |
| 2010–14 | 1961 | 1978 | 1975 | 1975 |
| 2015–19 | 1971 | 1979 | 1976 | 1977 |
| 2020–24 | 1938 | 1982 | 1978 | 1980 |
| Change | −15 | +6 | +4 | +6 |
The housing in Cobb Island is old by national standards: the median home dates to 1938, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $880 | $1,470 | $1,249 | $965 |
| 2010–14 | $1,234 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $1,557 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $1,216 | $2,236 | $1,869 | $1,571 |
| Change | +$336 | +$766 | +$620 | +$606 |
Rent in Cobb Island runs $1,216 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 37.9% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Cobb Island
Bachelor's degrees in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 15.4% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 18.2% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 8.0% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 2.5% | 53.9% | 43.4% | 35.6% |
| Change | −12.8 pts | +7.3 pts | +7.1 pts | +7.2 pts |
College degrees are relatively uncommon in Cobb Island: 2.5% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 85.2% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 90.5% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 90.3% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 95.2% | 91.2% | 90.9% | 89.3% |
| Change | +10.0 pts | +1.7 pts | +2.9 pts | +4.3 pts |
High school completion is high in Cobb Island: 95.2% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Cobb Island
| Period | Cobb Island | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.9% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 3.2% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 3.4% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 0.0% | 4.8% | 5.0% | 5.4% |
| Change | −2.9 pts | −1.1 pts | −1.5 pts | −2.7 pts |
The survey found almost no one in Cobb Island out of work and looking, against 5.4% of the labor force nationally. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Cobb Island compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Cobb Island | 2.60 | 45.6 | 6.7% | 0.1% | 36.1% | 1938 | $1,216 | 2.5% | 95.2% | 0.0% |
| Rock Point | 2.71 | 49.2 | 15.9% | 29.0% | 5.6% | 1992 | $1,179 | 38.5% | 95.4% | 1.3% |
| Longview Beach | 2.52 | 52.0 | 8.2% | 12.0% | 25.2% | 1975 | $1,683 | 19.8% | 77.7% | 12.7% |
| Bushwood | 2.40 | 52.9 | 8.0% | 12.7% | 20.3% | 1978 | $1,685 | 19.4% | 83.5% | 9.3% |
| Issue | 2.71 | 49.2 | 15.9% | 29.0% | 5.6% | 1992 | $1,179 | 38.5% | 95.4% | 1.3% |
| Coltons Point | 2.00 | 64.2 | 3.2% | 21.0% | 18.4% | 1970 | $1,604 | 13.5% | 63.8% | 11.2% |
| Avenue | 2.26 | 55.2 | 6.7% | 14.8% | 16.3% | 1979 | $1,674 | 18.0% | 86.0% | 6.3% |
| Abell | 2.08 | 59.6 | 4.9% | 18.3% | 14.4% | 1977 | $1,645 | 15.7% | 80.1% | 6.2% |
| Mount Victoria | 2.02 | 62.4 | 1.8% | 34.7% | 21.3% | 1960 | $1,213 | 19.7% | 88.5% | 0.0% |
| Chaptico | 2.29 | 49.6 | 18.0% | 6.8% | 7.7% | 1990 | $1,639 | 26.0% | 94.9% | 10.6% |
| Colonial Beach | 2.35 | 46.9 | 15.5% | 18.6% | 24.4% | 1984 | $1,155 | 23.5% | 89.0% | 7.2% |
All figures 2020–24.
Cities with similar populations: Ridgeway, MO · New Plymouth, OH · Pleasant Grove, CA · Polkville, MS · Pottersville, MO · Prescott, WA · Presque Isle, WI · Ragland, WV · Ravia, OK · Red Valley, AZ
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Cobb Island. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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