Is Hill County, MT's population growing or shrinking?
Refreshed annually
It grew by 52 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 0.32% annual increase was primarily driven by births outpacing deaths.
In the decade between 2015 and 2025, Hill County, MT’s population shrank by 1.6%.
+52
population change (2024 to 2025)
+0.32%
percent change in population (2024 to 2025)
Since 2000, Hill County, MT’s population increased 12 out of 25 years. The largest increase occurred between 2010 and 2011, when Hill County, MT gained 240 residents. Its largest decline occurred between 2009 and 2010 when there were 440 fewer residents.
Hill County, MT gained 52 residents between 2024 and 2025.
Annual population change, 2001–2025
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What contributes to population change in Hill County, MT?
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 Hill County, MT, with births exceeding deaths by 58.
- 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, Hill County, MT’s population change from immigration was negative with about seven more people leaving for another country directly from Hill County, MT than coming.
- Domestic migration, moving between counties: Between 2024 to 2025, Hill County, MT’s population change from domestic migration was negative with about one more person moving to any other county in the US.
Between 2024 and 2025, natural change was the primary driver of population growth in Hill County, MT.
Components of population change from previous year, 2011–2025
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
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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.
