Is population growing or shrinking?

Refreshed annually
It shrank by 274 between 2024 and 2025. Changes in population reflect birth and death rates, immigration patterns, regional shifts, and even the overall health of the economy. Pottawattamie County, IA’s 0.29% annual decrease was primarily driven by deaths outpacing births.
In the decade between 2015 and 2025, Pottawattamie County, IA’s population shrank by 0.71%.

-274

population change (2024 to 2025)

-0.29%

percent change in population (2024 to 2025)
Since 2000, Pottawattamie County, IA’s population increased 14 out of 25 years. The largest increase occurred between 2009 and 2010, when Pottawattamie County, IA gained 2,900 residents. Its largest decline occurred between 2011 and 2012 when there were 552 fewer residents.

Pottawattamie County, IA lost 274 residents between 2024 and 2025.

Annual population change, 2001–2025

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What contributes to population change in Pottawattamie County, IA?

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 Pottawattamie County, IA, with deaths exceeding births by 240.
  • 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, Pottawattamie County, IA’s population change from immigration was negative with about 18 more people leaving for another country directly from Pottawattamie County, IA than coming.
  • Domestic migration, moving between counties: Between 2024 to 2025, Pottawattamie County, IA’s population change from domestic migration was negative with about 23 more people moving to any other county in the US.

Between 2024 and 2025, natural change was the primary driver of population decline in Pottawattamie County, IA.

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.