Is population growing or shrinking?

Refreshed annually
It grew by 4,300 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 2.2% annual increase was primarily driven by people moving from other states.
In the decade between 2015 and 2025, Bay County, FL’s population grew by 12.6%.

+4.34K

population change (2024 to 2025)

+2.2%

percent change in population (2024 to 2025)
Since 2000, Bay County, FL’s population increased 23 out of 25 years. The largest increase occurred between 2023 and 2024, when Bay County, FL gained 7,200 residents. Its largest decline occurred between 2018 and 2019 when there were 12,700 fewer residents.

Bay County, FL gained 4,300 residents between 2024 and 2025.

Annual population change, 2001–2025

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What contributes to population change in Bay County, FL?

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 Bay County, FL, with births exceeding deaths by 260.
  • 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, Bay County, FL’s population change from immigration was positive with about 1,100 more people coming from another country directly to Bay County, FL than leaving.
  • Domestic migration, moving between counties: Between 2024 to 2025, Bay County, FL’s population change from domestic migration was positive with about 3,000 more people coming from any other county in the US.

Between 2024 and 2025, domestic migration was the primary driver of population growth in Bay County, FL.

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.