Get ready-to-use data, reports, analysis, and visualizations covering the demographics of Suffolk County, Massachusetts based on the current United States Census Bureau's 2023 American Community Survey (ACS) 5-Year Estimates.
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Suffolk County, Massachusetts Demographics: Sex by Age
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the total population of Suffolk County, Massachusetts is 782,172. The median age of the population in Suffolk County, Massachusetts is 33.8. The median age for males is 33.5 years, and for females, it is 34.2 years.
The age distribution of the population in Suffolk County, Massachusetts is as follows:
- Under 5 years: 4.89%
- 5–17 years (children): 11.29%
- 18–24 years (young adults): 13.39%
- 25–34 years: 22.48%
- 35–54 years: 24.31%
- 55–64 years: 10.68%
- 65 years and over (seniors): 12.97%
The total dependency ratio in Suffolk County, Massachusetts is 41.12%. The youth dependency ratio is 22.82%, and the old-age dependency ratio is 18.30%. In demographic terms, the dependency ratio measures the size of the population typically not in the labor force (children and older adults) relative to those of working age.
Suffolk County, Massachusetts Demographics: Population by Race & Ethnicity
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the breakdown of the population in Suffolk County, Massachusetts by race and ethnicity (racial demographics) is as follows:
- White: 44.13%
- Black/African American: 17.92%
- American Indian and Alaska Native: 0.12%
- Asian: 8.92%
- Native Hawaiian or Other Pacific Islander: 0.05%
- Some other race: 1.09%
- Two or more races: 4.97%
- Hispanic or Latino: 22.79%
The diversity index score in Suffolk County, Massachusetts is 71.06%, suggesting a high level of diversity.
Suffolk County, Massachusetts Demographics: Household Income
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Suffolk County, Massachusetts over the past 12 months, adjusted for 2023 inflation, was $92,859.
The distribution of household income by income bracket in Suffolk County, Massachusetts is as follows:
- Less than $20,000: 16.20%
- $20,000–$34,999: 8.23%
- $35,000–$49,999: 7.24%
- $50,000–$74,999: 10.99%
- $75,000–$149,999: 25.97%
- $150,000 or more: 31.37%
Suffolk County, Massachusetts Demographics: Educational Attainment
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the breakdown of the total population of Suffolk County, Massachusetts, age 25 and older, by educational level is as follows:
- Less than high school graduate: 12.39%
- High school graduate (incl. equivalency): 20.51%
- Some college or associate's degree: 17.21%
- Bachelor's Degree: 26.84%
- Graduate or professional degree: 23.06%
In Suffolk County, Massachusetts, 49.89% of the population has a bachelor's degree or higher, while 87.61% are high school graduates or higher.
Suffolk County, Massachusetts Demographics: Health Insurance Coverage Status by Sex by Age
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the uninsured rate in Suffolk County, Massachusetts is 3.28%.
Rates of people in Suffolk County, Massachusetts lacking health insurance coverage, by age group and sex are as follows:
- Under 18: 1.58% of males and 1.82% of females are uninsured
- Ages 18–34: 3.77% of males and 2.47% of females are uninsured
- Ages 35–64: 5.22% of males and 3.10% of females are uninsured
- Ages 65 and older: 0.59% of males and 1.66% of females are uninsured
Suffolk County, Massachusetts Demographics: Nativity and Citizenship Status in the United States
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 85.38% of people living in Suffolk County, Massachusetts are U.S. citizens. This includes individuals born in the United States, Puerto Rico, or U.S. Island Areas, those born abroad to American parents, and those who became citizens through naturalization. 14.82% of the population obtained U.S. citizenship through the naturalization process. In Suffolk County, Massachusetts, 14.82% of the population are naturalized immigrants, who obtained U.S. citizenship through the immigration and naturalization process.
Suffolk County, Massachusetts Demographics: Means of Transportation to Work
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the means of transportation to work for the population of Suffolk County, Massachusetts are distributed as follows:
- Car, truck, or van: 42.78%
- Public transportation (excluding taxicab): 23.65%
- Bicycle: 1.90%
- Walked: 12.30%
- Taxicab, motorcycle, or other means: 1.86%
- Worked from home: 17.51%
Frequently Asked Questions
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the age breakdown of the population of Suffolk County, Massachusetts is as follows:
- Under 5: 4.89%
- Ages 5–17: 11.29%
- Ages 18–24: 13.39%
- Ages 25–34: 22.48%
- Ages 35–54: 24.31%
- Ages 55–64: 10.68%
- 65 or older: 12.97%
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the racial demographics of the population of Suffolk County, Massachusetts are as follows:
- White: 44.13%
- Black/African American: 17.92%
- American Indian and Alaska Native: 0.12%
- Asian: 8.92%
- Native Hawaiian or Other Pacific Islander: 0.05%
- Some other race: 1.09%
- Two or more races: 4.97%
- Hispanic or Latino: 22.79%
* Hispanic includes respondents of any race. Other categories are non-Hispanic.
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the distribution of household income in Suffolk County, Massachusetts by income bracket is as follows:
- Less than $20,000: 16.20%
- $20,000–$34,999: 8.23%
- $35,000–$49,999: 7.24%
- $50,000–$74,999: 10.99%
- $75,000–$149,999: 25.97%
- $150,000 or more: 31.37%
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Suffolk County, Massachusetts in the past 12 months, in 2023 inflation-adjusted dollars, was $92,859.
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 44.13% of the population in Suffolk County, Massachusetts identifies as White alone (not Hispanic or Latino).
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 17.92% of the population in Suffolk County, Massachusetts identifies as Black or African American alone (not Hispanic or Latino).
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 3.28% of the population of Suffolk County, Massachusetts lacks health insurance coverage.
The detailed breakdown by age and sex is as follows:
- Under 18: 1.58% of males and 1.82% of females
- Ages 18–34: 3.77% of males and 2.47% of females
- Ages 35–64: 5.22% of males and 3.10% of females
- Ages 65 and over: 0.59% of males and 1.66% of females