Barnstable County's estimated 2026 population is 233,127 with a growth rate of -0.18% in the past year according to the most recent United States census data. Barnstable County is the 9th largest county in Massachusetts. The 2010 population was 215,909 and has seen a growth of 7.97% since that time.
Data after 2023 is projected based on recent change
Overall: 55.4 years
Female: 56.7 years
Male: 52.9 years
There are 198,964 adults, (76,755 of whom are seniors) in Barnstable County.
Female: 120,129 (51.9%)
Male: 111,539 (48.1%)
The racial composition of Barnstable County includes 85.82% White, and smaller percentages for Black or African American, other race, Asian, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 198,817 | 85.82% |
| Two or more races | 16,406 | 7.08% |
| Black or African American | 6,467 | 2.79% |
| Other race | 5,531 | 2.39% |
| Asian | 3,422 | 1.48% |
| Native American | 1,025 | 0.44% |
Barnstable County's average per capita income is $59,063. Household income levels show a median of $95,241. The poverty rate stands at 7.67%.
Name | Median | Mean |
|---|---|---|
| Married Families | $139,276 | $183,536 |
| Families | $124,710 | $166,816 |
| Households | $95,241 | $134,349 |
| Non Families | $55,199 | $78,698 |
Average Income
Median Household Income
Poverty Rate