Overview
13,372
Total Population
41.1
Median age
48.22%
Female population %
107.4:100
Gender ratio (M:F)
10-14 years
Largest age group
56.0
Total dependency ratio
White
Largest racial group
127
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Osage County's population is old compared to the rest of the country:
- The median age in Osage County is 41.1, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Osage County's population under 18 was 22.85%, compared to the 22.51% nationwide.
- Osage County's elderly or the senior population (over 65 age) was 17.28% as compared to 16.04% nationwide.
- Of the total population in Osage County, 18.62% were under the age of 15, 18.75% aged 15 to 29, 45.35% aged 30 to 64, 14.54% aged 65 to 84, and 2.74% were 85 years of age and older.

Read more about Osage County, MO population by age ➔
Gender
There are 476 less females than males in Osage County:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 48.22% females and 51.78% males in Osage County, MO.
- The Osage County, MO gender ratio is 107.4:100 i.e. 107.4 men to 100 women (1.074).
- For male population, the largest age group is 55-59 years with a population of 631.
- For the female population, the largest age group is 10-14 years with a population of 581.

Read more about Osage County, MO population by gender ➔
Race / Ethnicity
Osage County's population has become increasingly diverse:
- Racial distribution of Osage County population: 98.12% are White, 0.17% are Black or African American, 0.61% are American Indian and Alaska Native, 0.07% are some other race and 1.03% are multiracial.
- Osage County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
- By ethnicity, 127 is Hispanic or Latino (of any race), and 13,245 (99.05% of the total population) is Non-Hispanic.
- The largest racial group in Osage County is White with a population of 13,12 (98.12% of the total population).

Read more about Osage County, MO population by race ➔
Year by year
Osage County's population has already reached its peak and is showing a trend of decline:
- The peak population was 13,909 in the year 2011
- From 2000 to 2010, Osage County's population increased by 892 (6.85%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Osage County's population decreased by 642 (4.62%), 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, Osage County's population was lowest in year 2002 at 12,996.

Read more about Osage County, MO population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)