Fergus County, Montana Age & Gender Statistics (2024)

Total Population

11,687

Median Age

44.4

Male Median

43.9

Female Median

45.1

Fergus County, Montana Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Fergus County, Montana Demographic Trend

Since 2010, the population of has changed by +1.5%%.

+1.5%% Growth

Fergus County, Montana Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Fergus County, Montana Historical Population Data

YearMedian AgePopulation
202444.411,687
202345.311,581
202246.711,496
202145.511,464
202045.011,167
201945.311,221
201846.011,273
201745.711,327
201646.911,429
201547.011,468
201448.411,496
201348.411,517
201248.111,507
201147.711,516
201046.911,513

Fergus County, Montana Age Group Breakdown (2024)

Age CohortPercentage
Under 55.5%
5–1715.5%
18–246.4%
25–3412.0%
35–5421.2%
55–6414.3%
65+25.1%

Dependency Ratios for Fergus County, Montana

Total Dependency Ratio:
85.5
Youth Dependency:
39.0
Old-Age Dependency:
46.5

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Fergus County, Montana

The median age in Fergus County, Montana is 44.4 years.

According to latest Census data, the total population of Fergus County, Montana is 11,687.

In Fergus County, Montana, seniors (ages 65+) make up 25.1% of the population, while children under 18 represent 15.5%.

Based on historical data since 2010, the population in Fergus County, Montana is becoming younger.
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