Madison County, IA Population

The population of Madison County is 16,414, according to the U.S. Census Bureau ACS estimates.
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Updated Jun 23, 2023
Overview
16,414
Total Population
40.5
Median age
49.76%
Female population %
101:100
Gender ratio (M:F)
5-9 years
Largest age group
61.7
Total dependency ratio
White
Largest racial group
387
Hispanic population

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

Age

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

  • The median age in Madison County is 40.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
  • Madison County's population under 18 was 25.46%, compared to the 22.51% nationwide.
  • Madison County's elderly or the senior population (over 65 age) was 17.19% as compared to 16.04% nationwide.
  • Of the total population in Madison County, 20.98% were under the age of 15, 15.99% aged 15 to 29, 45.84% aged 30 to 64, 15.66% aged 65 to 84, and 1.53% were 85 years of age and older.
The graph shows Madison County's population by age group, with age group on x-axis and the respective age group's percent of the total population on y-axis
Madison County, IA population by age group. The largest age group was 5-9 years with a poulation of 1,471 (8.96% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Read more about Madison County, IA population by age ➔

Gender

There are 80 less females than males in Madison County:

  • The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.76% females and 50.24% males in Madison County, IA.
  • The Madison County, IA gender ratio is 101:100 i.e. 101 men to 100 women (1.010).
  • For male population, the largest age group is 5-9 years with a population of 731.
  • For the female population, the largest age group is 5-9 years with a population of 740.
The grouped bar chart shows Madison County, IA population by age and gender across 18 age groups, defined between the age of 0 and 85 and above. The female population is shown in pink color bar and male population is shown in blue color bar. Age group is plotted on x axis and population on y axis.
California population by gender and age. Largest age group (population): Male # 5-9 years (731) | Female # 5-9 years (740). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Read more about Madison County, IA population by gender ➔

Race / Ethnicity

Madison County's population has become increasingly diverse:

  • Racial distribution of Madison County population: 96.61% are White, 0.87% are Black or African American, 0.07% are American Indian and Alaska Native, 0.96% are Asian, 0.02% are some other race and 1.47% are multiracial.
  • Madison County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
  • By ethnicity, 387 is Hispanic or Latino (of any race), and 16,027 (97.64% of the total population) is Non-Hispanic.
  • The largest racial group in Madison County is White with a population of 15,858 (96.61% of the total population).
The bar chart shows Madison County, IA population by race, in percentage. The numbers shown are based on the American Community Survey respondents self identified race. The Hispanic and Latino population is spread across the races identified and not as a separate race category.
Madison County, IA population by race. The largest racial group in Madison County is White with a population of 15,858 (96.61% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Read more about Madison County, IA population by race ➔

Year by year

Madison County's population has not reached its peak yet and is showing a trend of further growth:

  • The peak population was 17,036 in the year 2022
  • From 2000 to 2010, Madison County's population increased by 1,707 (12.17%), as compared to the national growth of 9.63%.
  • From 2010 to 2020, Madison County's population increased by 890 (5.66%), 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, Madison County's population was lowest in year 2000 at 14,031.
The graph shows Madison County's population from 2000 to 2022, with years on x-axis and population on y-axis
Madison County's population from 2000 to 2022. The estimated population at the end of 2022 was 17,036. Source: U.S. Census Bureau (Population Estimates Program)

Read more about Madison County, IA population by year ➔

References

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Madison County, IA Demographics

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Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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