Blaine County, MT Population

Overview

7,051

Total Population

33.5

Median age

50.06%

Female population %

99.7:100

Gender ratio (M:F)

5-9 years

Largest age group

69.3

Total dependency ratio

American Indian and Alaska Native

Largest racial group

262

Hispanic population

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

TABLE OF CONTENTS

Age

Blaine County's population is young compared to the rest of the country:

The median age in Blaine County is 33.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Blaine County's population under 18 was 30.27%, compared to the 22.51% nationwide.
Blaine County's elderly or the senior population (over 65 age) was 15.30% as compared to 16.04% nationwide.
Of the total population in Blaine County, 25.64% were under the age of 15, 19.66% aged 15 to 29, 39.40% aged 30 to 64, 13.44% aged 65 to 84, and 1.86% were 85 years of age and older.

There are 9 more females than males in Blaine County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.06% females and 49.94% males in Blaine County, MT.
The Blaine County, MT gender ratio is 99.7:100 i.e. 99.7 men to 100 women (0.997).
For male population, the largest age group is 15-19 years with a population of 339.
For the female population, the largest age group is 5-9 years with a population of 297.

Blaine County's population has become increasingly diverse:

Racial distribution of Blaine County population: 43.71% are White, 0.79% are Black or African American, 52.57% are American Indian and Alaska Native, 0.06% are Asian, 0.35% are some other race and 2.51% are multiracial.
Blaine County's racial breakdown clearly shows that there is an absolute majority of American Indian and Alaska Native population in the county.
By ethnicity, 262 is Hispanic or Latino (of any race), and 6,789 (96.28% of the total population) is Non-Hispanic.
The largest racial group in Blaine County is American Indian and Alaska Native with a population of 3,707 (52.57% of the total population).

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

The peak population was 7,005 in the year 2020
From 2000 to 2010, Blaine County's population decreased by 440 (6.34%), as compared to the national growth of 9.63%.
From 2010 to 2020, Blaine County's population increased by 502 (7.72%), 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, Blaine County's population was lowest in year 2008 at 6,432.