Overview
11,552
Total Population
35.2
Median age
50.39%
Female population %
98.5:100
Gender ratio (M:F)
25-29 years
Largest age group
64.7
Total dependency ratio
White
Largest racial group
405
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Oskaloosa's population is young compared to the rest of the country:
- The median age in Oskaloosa is 35.2, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Oskaloosa's population under 18 was 23.95%, compared to the 22.51% nationwide.
- Oskaloosa's elderly or the senior population (over 65 age) was 18.96% as compared to 16.04% nationwide.
- Of the total population in Oskaloosa, 20.32% were under the age of 15, 22.90% aged 15 to 29, 37.83% aged 30 to 64, 15.75% aged 65 to 84, and 3.20% were 85 years of age and older.

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Gender
There are 90 more females than males in Oskaloosa:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.39% females and 49.61% males in Oskaloosa, IA.
- The Oskaloosa, IA gender ratio is 98.5:100 i.e. 98.5 men to 100 women (0.985).
- For male population, the largest age group is 25-29 years with a population of 553.
- For the female population, the largest age group is 20-24 years with a population of 473.

Read more about Oskaloosa, IA population by gender ➔
Race / Ethnicity
Oskaloosa's population has become increasingly diverse:
- Racial distribution of Oskaloosa population: 91.72% are White, 2.85% are Black or African American, 0.13% are American Indian and Alaska Native, 2.19% are Asian, 0.25% are Native Hawaiian and other Pacific Islander, 1.02% are some other race and 1.84% are multiracial.
- Oskaloosa's racial breakdown clearly shows that there is an absolute majority of White population in the city.
- By ethnicity, 405 is Hispanic or Latino (of any race), and 11,147 (96.49% of the total population) is Non-Hispanic.
- The largest racial group in Oskaloosa is White with a population of 10,596 (91.72% of the total population).

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Year by year
Oskaloosa's population has already reached its peak and is showing a trend of decline:
- The peak population was 11,811 in the year 2019
- From 2000 to 2010, Oskaloosa's population increased by 542 (4.94%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Oskaloosa's population increased by 20 (0.17%), 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, Oskaloosa's population was lowest in year 2003 at 10,891.

Read more about Oskaloosa, IA 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)