How many people live in Lower Connecticut River Valley Planning Region, CT?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 177,500 people living in Lower Connecticut River Valley Planning Region, CT. That makes Lower Connecticut River Valley Planning Region the seventh-most populous planning region in Connecticut. It is home to 4.8% of people living in the state.
178K
population of Lower Connecticut River Valley Planning Region, CT (2024)
4.8%
County share of the Connecticut population (2024)
About 177,500 people lived in Lower Connecticut River Valley Planning Region, CT in 2024.
Population estimates, 2020–2024
What are Lower Connecticut River Valley Planning Region, CT’s age demographics?
About 42,000 Lower Connecticut River Valley Planning Region residents are aged 65 and older in 2024. That represents 23.7% of its population. For comparison, the age group represents 19.5% of Connecticut’s population and 18% in the US overall.
Another 28,700 Lower Connecticut River Valley Planning Region, CT residents, or 16.2% of the population, were children under 18. For comparison, the age group represents 19.8% of Connecticut’s population and 21.6% in the US overall.
A higher share of Lower Connecticut River Valley Planning Region, CT's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Lower Connecticut River Valley Planning Region, CT’s racial and ethnic demographics?
Non-Hispanic white residents make up 80.1% of the Lower Connecticut River Valley Planning Region, CT population, higher than the national share of 57.5%.
In contrast, Lower Connecticut River Valley Planning Region’s Hispanic population accounts for 8.7%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 5.4% of the region, 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.
Lower Connecticut River Valley Planning Region, CT has a higher share of a non-Hispanic white population than Connecticut as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Lower Connecticut River Valley Planning Region, CT is Middletown with about 48,600 residents in 2024.
Cities and towns in Lower Connecticut River Valley Planning Region, CT ranked by population
Population (2024), includes only portions within planning region
| City or town | Population | |
|---|---|---|
| 1. | Middletown | 48,616 |
| 2. | Cromwell | 14,388 |
| 3. | Clinton | 13,467 |
| 4. | East Hampton | 13,109 |
| 5. | Portland | 9,478 |
| 6. | East Haddam | 9,061 |
| 7. | Haddam | 8,806 |
| 8. | Old Lyme | 7,721 |
| 9. | Durham | 7,230 |
| 10. | Westbrook | 6,918 |
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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.
