Get ready-to-use data, reports, analysis, and visualizations covering the demographics of Lower Connecticut River Valley Planning Region, Connecticut based on the current United States Census Bureau's 2023 American Community Survey (ACS) 5-Year Estimates.
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Lower Connecticut River Valley Planning Region, Connecticut Demographics: Sex by Age

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the total population of Lower Connecticut River Valley Planning Region, Connecticut is 174,983. The median age of the population in Lower Connecticut River Valley Planning Region, Connecticut is 45.8. The median age for males is 43.8 years, and for females, it is 47.5 years.
The age distribution of the population in Lower Connecticut River Valley Planning Region, Connecticut is as follows:
- Under 5 years: 4.09%
- 5–17 years (children): 12.91%
- 18–24 years (young adults): 8.77%
- 25–34 years: 11.43%
- 35–54 years: 24.95%
- 55–64 years: 16.25%
- 65 years and over (seniors): 21.61%
The total dependency ratio in Lower Connecticut River Valley Planning Region, Connecticut is 62.88%. The youth dependency ratio is 27.69%, and the old-age dependency ratio is 35.19%. 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.
Lower Connecticut River Valley Planning Region, Connecticut 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 Lower Connecticut River Valley Planning Region, Connecticut by race and ethnicity (racial demographics) is as follows:
- White: 80.04%
- Black/African American: 4.55%
- American Indian and Alaska Native: 0.02%
- Asian: 3.49%
- Native Hawaiian or Other Pacific Islander: 0.13%
- Some other race: 0.27%
- Two or more races: 4.05%
- Hispanic or Latino: 7.45%
The diversity index score in Lower Connecticut River Valley Planning Region, Connecticut is 34.89%, suggesting a low level of diversity.
Lower Connecticut River Valley Planning Region, Connecticut Demographics: Household Income

According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Lower Connecticut River Valley Planning Region, Connecticut over the past 12 months, adjusted for 2023 inflation, was $101,117.
The distribution of household income by income bracket in Lower Connecticut River Valley Planning Region, Connecticut is as follows:
- Less than $20,000: 8.07%
- $20,000–$34,999: 8.12%
- $35,000–$49,999: 7.55%
- $50,000–$74,999: 14.07%
- $75,000–$149,999: 31.42%
- $150,000 or more: 30.77%
Lower Connecticut River Valley Planning Region, Connecticut 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 Lower Connecticut River Valley Planning Region, Connecticut, age 25 and older, by educational level is as follows:
- Less than high school graduate: 4.77%
- High school graduate (incl. equivalency): 24.53%
- Some college or associate's degree: 25.25%
- Bachelor's Degree: 25.26%
- Graduate or professional degree: 20.19%
In Lower Connecticut River Valley Planning Region, Connecticut, 45.45% of the population has a bachelor's degree or higher, while 95.23% are high school graduates or higher.
Lower Connecticut River Valley Planning Region, Connecticut 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 Lower Connecticut River Valley Planning Region, Connecticut is 3.42%.
Rates of people in Lower Connecticut River Valley Planning Region, Connecticut lacking health insurance coverage, by age group and sex are as follows:
- Under 18: 1.59% of males and 1.84% of females are uninsured
- Ages 18–34: 3.69% of males and 2.37% of females are uninsured
- Ages 35–64: 7.02% of males and 5.05% of females are uninsured
- Ages 65 and older: 0.01% of males and 1.14% of females are uninsured
Lower Connecticut River Valley Planning Region, Connecticut 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, 97.13% of people living in Lower Connecticut River Valley Planning Region, Connecticut 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. 5.19% of the population obtained U.S. citizenship through the naturalization process. In Lower Connecticut River Valley Planning Region, Connecticut, 5.19% of the population are naturalized immigrants, who obtained U.S. citizenship through the immigration and naturalization process.
Lower Connecticut River Valley Planning Region, Connecticut 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 Lower Connecticut River Valley Planning Region, Connecticut are distributed as follows:
- Car, truck, or van: 79.74%
- Public transportation (excluding taxicab): 1.18%
- Bicycle: 0.20%
- Walked: 2.62%
- Taxicab, motorcycle, or other means: 1.16%
- Worked from home: 15.10%
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 Lower Connecticut River Valley Planning Region, Connecticut is as follows:
- Under 5: 4.09%
- Ages 5–17: 12.91%
- Ages 18–24: 8.77%
- Ages 25–34: 11.43%
- Ages 35–54: 24.95%
- Ages 55–64: 16.25%
- 65 or older: 21.61%
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the racial demographics of the population of Lower Connecticut River Valley Planning Region, Connecticut are as follows:
- White: 80.04%
- Black/African American: 4.55%
- American Indian and Alaska Native: 0.02%
- Asian: 3.49%
- Native Hawaiian or Other Pacific Islander: 0.13%
- Some other race: 0.27%
- Two or more races: 4.05%
- Hispanic or Latino: 7.45%
* 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 Lower Connecticut River Valley Planning Region, Connecticut by income bracket is as follows:
- Less than $20,000: 8.07%
- $20,000–$34,999: 8.12%
- $35,000–$49,999: 7.55%
- $50,000–$74,999: 14.07%
- $75,000–$149,999: 31.42%
- $150,000 or more: 30.77%
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Lower Connecticut River Valley Planning Region, Connecticut in the past 12 months, in 2023 inflation-adjusted dollars, was $101,117.
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 80.04% of the population in Lower Connecticut River Valley Planning Region, Connecticut identifies as White alone (not Hispanic or Latino).
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 4.55% of the population in Lower Connecticut River Valley Planning Region, Connecticut 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, 3.42% of the population of Lower Connecticut River Valley Planning Region, Connecticut lacks health insurance coverage.
The detailed breakdown by age and sex is as follows:
- Under 18: 1.59% of males and 1.84% of females
- Ages 18–34: 3.69% of males and 2.37% of females
- Ages 35–64: 7.02% of males and 5.05% of females
- Ages 65 and over: 0.01% of males and 1.14% of females