Mahaska County, IA Population

Overview

22,132

Total Population

38.6

Median age

49.16%

Female population %

103.4:100

Gender ratio (M:F)

15-19 years

Largest age group

61.4

Total dependency ratio

White

Largest racial group

529

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Mahaska County is 38.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Mahaska County's population under 18 was 24.02%, compared to the 22.51% nationwide.
Mahaska County's elderly or the senior population (over 65 age) was 17.93% as compared to 16.04% nationwide.
Of the total population in Mahaska County, 20.10% were under the age of 15, 19.43% aged 15 to 29, 42.53% aged 30 to 64, 15.48% aged 65 to 84, and 2.46% were 85 years of age and older.

There are 370 less females than males in Mahaska County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.16% females and 50.84% males in Mahaska County, IA.
The Mahaska County, IA gender ratio is 103.4:100 i.e. 103.4 men to 100 women (1.034).
For male population, the largest age group is 10-14 years with a population of 885.
For the female population, the largest age group is 60-64 years with a population of 824.

Mahaska County's population has become increasingly diverse:

Racial distribution of Mahaska County population: 94.03% are White, 1.74% are Black or African American, 0.08% are American Indian and Alaska Native, 1.23% are Asian, 0.14% are Native Hawaiian and other Pacific Islander, 0.57% are some other race and 2.22% are multiracial.
Mahaska County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 529 is Hispanic or Latino (of any race), and 21,603 (97.61% of the total population) is Non-Hispanic.
The largest racial group in Mahaska County is White with a population of 20,811 (94.03% of the total population).

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

The peak population was 22,506 in the year 2011
From 2000 to 2010, Mahaska County's population increased by 142 (0.64%), as compared to the national growth of 9.63%.
From 2010 to 2020, Mahaska County's population decreased by 262 (1.17%), 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, Mahaska County's population was lowest in year 2021 at 21,944.