How many people live in Nantucket County, MA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 14,700 people living in Nantucket County, MA. That makes Nantucket County the 14th-most populous county in Massachusetts. It is home to 0.21% of people living in the state.
14.7K
population of Nantucket County, MA (2024)
0.21%
County share of the Massachusetts population (2024)
About 14,700 people lived in Nantucket County, MA in 2024.
Population estimates, 2000–2024
What are Nantucket County, MA’s age demographics?
About 2,500 Nantucket County residents are aged 65 and older in 2024. That represents 17.3% of its population. For comparison, the age group represents 18.7% of Massachusetts' population and 18% in the US overall.
Another 2,900 Nantucket County residents, or 19.8% of the population, were children under 18. For comparison, the age group represents 19% of Massachusetts' population and 21.6% in the US overall.
A higher share of Nantucket County, MA's population is aged 45–64 than the US as a whole.
Population estimates by age group, (2024)
What are Nantucket County, MA’s racial and ethnic demographics?
Non-Hispanic white residents make up 68.1% of the Nantucket County, MA population, higher than the national share of 57.5%.
In contrast, Nantucket County’s non-Hispanic Asian population accounts for 1.8%, below the 6.5% nationwide, and the non-Hispanic Black or African American population makes up 9.5% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Nantucket County, MA has a higher share of a Hispanic population than Massachusetts as a whole.
Population estimates by race and ethnicity, (2024)
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
