Overview
969,542
Total Population
34.4
Median age
51.61%
Female population %
93.7:100
Gender ratio (M:F)
25-29 years
Largest age group
50.3
Total dependency ratio
White
Largest racial group
105,058
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Marion County's population is young compared to the rest of the country:
- The median age in Marion County is 34.4, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Marion County's population under 18 was 24.85%, compared to the 22.51% nationwide.
- Marion County's elderly or the senior population (over 65 age) was 12.53% as compared to 16.04% nationwide.
- Of the total population in Marion County, 20.96% were under the age of 15, 21.97% aged 15 to 29, 44.55% aged 30 to 64, 11.05% aged 65 to 84, and 1.48% were 85 years of age and older.
Read more about Marion County, IN population by age ➔
Gender
There are 31,280 more females than males in Marion County:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.61% females and 48.39% males in Marion County, IN.
- The Marion County, IN gender ratio is 93.7:100 i.e. 93.7 men to 100 women (0.937).
- For male population, the largest age group is 25-29 years with a population of 40,932.
- For the female population, the largest age group is 25-29 years with a population of 43,741.
Read more about Marion County, IN population by gender ➔
Race / Ethnicity
Marion County's population has become increasingly diverse:
- Racial distribution of Marion County population: 58.48% are White, 28.08% are Black or African American, 0.19% are American Indian and Alaska Native, 3.73% are Asian, 0.02% are Native Hawaiian and other Pacific Islander, 4.02% are some other race and 5.48% are multiracial.
- Marion County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
- By ethnicity, 105,058 is Hispanic or Latino (of any race), and 864,484 (89.16% of the total population) is Non-Hispanic.
- The largest racial group in Marion County is White with a population of 567,024 (58.48% of the total population).
Read more about Marion County, IN population by race ➔
Year by year
Marion County's population has already reached its peak and is showing a trend of decline:
- The peak population was 976,631 in the year 2020
- From 2000 to 2010, Marion County's population increased by 43,685 (5.07%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Marion County's population increased by 72,027 (7.96%), 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, Marion County's population was lowest in year 2000 at 860,919.
Read more about Marion County, IN 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)