Is population growing or shrinking?

Refreshed annually
It grew by 2,800 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 0.43% annual increase was primarily driven by immigration to the state.

+2.76K

population change (2024 to 2025)

+0.43%

percent change in population (2024 to 2025)

Western Connecticut Planning Region, CT gained 2,800 residents between 2024 and 2025.

Annual population change, 2001–2025

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What contributes to population change in Western Connecticut 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 positive in Western Connecticut Planning Region, CT, with births exceeding deaths by 1,600.
  • 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, Western Connecticut Planning Region, CT’s population change from immigration was positive with about 4,800 more people coming from another country directly to Western Connecticut Planning Region, CT than leaving.
  • Domestic migration, moving between counties: Between 2024 to 2025, Western Connecticut Planning Region, CT’s population change from domestic migration was negative with about 3,700 more people moving to any other county in the US.

Between 2024 and 2025, immigration was the primary driver of population growth in Western Connecticut 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.