Cobb Island is a CDP located in Charles County, Maryland. Cobb Island has a 2026 population of 1,161. Cobb Island is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The median age in Cobb Island is 50 years: 45.3 years for males, and 50.6 years for females. For every 100 females there are 116.5 males.
Data after 2023 is projected based on recent change
Overall: 50 years
Female: 50.6 years
Male: 45.3 years
There are 758 adults, (40 of whom are seniors) in Cobb Island.
Female: 423 (46.2%)
Male: 493 (53.8%)
The racial composition of Cobb Island includes 92.03% White, and smaller percentages for Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 843 | 92.03% |
| Two or more races | 53 | 5.79% |
| Asian | 20 | 2.18% |