Stillwater County, MT Population

Overview

8,916

Total Population

48.3

Median age

49.27%

Female population %

103:100

Gender ratio (M:F)

55-59 years

Largest age group

67.5

Total dependency ratio

White

Largest racial group

356

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Stillwater County's population is old compared to the rest of the country:

The median age in Stillwater County is 48.3, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Stillwater County's population under 18 was 21.56%, compared to the 22.51% nationwide.
Stillwater County's elderly or the senior population (over 65 age) was 23.08% as compared to 16.04% nationwide.
Of the total population in Stillwater County, 17.21% were under the age of 15, 14.64% aged 15 to 29, 45.08% aged 30 to 64, 21.02% aged 65 to 84, and 2.06% were 85 years of age and older.

There are 130 less females than males in Stillwater County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.27% females and 50.73% males in Stillwater County, MT.
The Stillwater County, MT gender ratio is 103:100 i.e. 103 men to 100 women (1.030).
For male population, the largest age group is 55-59 years with a population of 476.
For the female population, the largest age group is 60-64 years with a population of 430.

Stillwater County's population has become increasingly diverse:

Racial distribution of Stillwater County population: 94.66% are White, 0.10% are Black or African American, 1.04% are American Indian and Alaska Native, 0.20% are Asian, 0.40% are some other race and 3.59% are multiracial.
Stillwater County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 356 is Hispanic or Latino (of any race), and 8,56 (96.01% of the total population) is Non-Hispanic.
The largest racial group in Stillwater County is White with a population of 8,44 (94.66% of the total population).

Stillwater County's population has already reached its peak and is showing a trend of decline:

The peak population was 9,671 in the year 2019
From 2000 to 2010, Stillwater County's population increased by 870 (10.56%), as compared to the national growth of 9.63%.
From 2010 to 2020, Stillwater County's population decreased by 115 (1.26%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Stillwater County's population was lowest in year 2000 at 8,242.