Delaware County, IA Population

Overview

17,508

Total Population

43.7

Median age

49.09%

Female population %

103.7:100

Gender ratio (M:F)

55-59 years

Largest age group

65.0

Total dependency ratio

White

Largest racial group

277

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Delaware County is 43.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Delaware County's population under 18 was 24.05%, compared to the 22.51% nationwide.
Delaware County's elderly or the senior population (over 65 age) was 19.53% as compared to 16.04% nationwide.
Of the total population in Delaware County, 19.88% were under the age of 15, 15.70% aged 15 to 29, 44.89% aged 30 to 64, 16.86% aged 65 to 84, and 2.67% were 85 years of age and older.

There are 320 less females than males in Delaware County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.09% females and 50.91% males in Delaware County, IA.
The Delaware County, IA gender ratio is 103.7:100 i.e. 103.7 men to 100 women (1.037).
For male population, the largest age group is 55-59 years with a population of 771.
For the female population, the largest age group is 55-59 years with a population of 795.

Delaware County's population has become increasingly diverse:

Racial distribution of Delaware County population: 96.56% are White, 0.14% are Black or African American, 0.08% are American Indian and Alaska Native, 0.34% are Asian, 0.62% are some other race and 2.27% are multiracial.
Delaware County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 277 is Hispanic or Latino (of any race), and 17,231 (98.42% of the total population) is Non-Hispanic.
The largest racial group in Delaware County is White with a population of 16,905 (96.56% of the total population).

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

The peak population was 18,385 in the year 2000
From 2000 to 2010, Delaware County's population decreased by 622 (3.38%), as compared to the national growth of 9.63%.
From 2010 to 2020, Delaware County's population decreased by 307 (1.73%), 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, Delaware County's population was lowest in year 2019 at 17,057.