Is population growing or shrinking?

Refreshed annually
It grew by 264 between 2024 and 2025. Changes in population can reflect birth and death rates, immigration patterns, regional shifts, and even the overall health of the economy. The 0.15% annual increase was primarily driven by immigration to the state.

+264

population change (2024 to 2025)

+0.15%

percent change in population (2024 to 2025)

Lower Connecticut River Valley Planning Region, CT gained 264 residents between 2024 and 2025.

Annual population change, 2001–2025

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What contributes to population change in Lower Connecticut River Valley Planning Region, CT?

A county’s population is influenced by three factors:
  • Natural population change: If births outnumber deaths in a given year, natural population growth is positive. If deaths exceed births, it is negative. Between 2024 and 2025 natural population change was negative in Lower Connecticut River Valley Planning Region, CT, with deaths exceeding births by 324.
  • Immigration: international migration directly into or out of a county: If more people move in than move out, population change from immigration is positive. If more people move out than move in, it’s negative. Between 2024 to 2025, Lower Connecticut River Valley Planning Region, CT’s population change from immigration was positive with about 379 more people coming from another country directly to Lower Connecticut River Valley Planning Region, CT than leaving.
  • Domestic migration, moving between counties: Between 2024 to 2025, Lower Connecticut River Valley Planning Region, CT’s population change from domestic migration was positive with about 197 more people coming from any other county in the US.

Between 2024 and 2025, immigration was the primary driver of population growth in Lower Connecticut River Valley Planning Region, CT.

Components of population change from previous year, 2011–2025

How is the US population changing?

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Methodology

USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.

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.