Get ready-to-use data, reports, analysis, and visualizations covering the demographics of Marion County, Indiana based on the current United States Census Bureau's 2023 American Community Survey (ACS) 5-Year Estimates.
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Marion County, Indiana Demographics: Sex by Age
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the total population of Marion County, Indiana is 971,822. The median age of the population in Marion County, Indiana is 34.3. The median age for males is 33.3 years, and for females, it is 35.2 years.
The age distribution of the population in Marion County, Indiana is as follows:
- Under 5 years: 7.03%
- 5–17 years (children): 18.04%
- 18–24 years (young adults): 9.41%
- 25–34 years: 16.60%
- 35–54 years: 24.57%
- 55–64 years: 11.48%
- 65 years and over (seniors): 12.87%
The total dependency ratio in Marion County, Indiana is 61.13%. The youth dependency ratio is 40.40%, and the old-age dependency ratio is 20.73%. In demographic terms, the dependency ratio measures the size of the population typically not in the labor force (children and older adults) relative to those of working age.
Marion County, Indiana Demographics: Population by Race & Ethnicity
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the breakdown of the population in Marion County, Indiana by race and ethnicity (racial demographics) is as follows:
- White: 50.49%
- Black/African American: 27.31%
- American Indian and Alaska Native: 0.05%
- Asian: 3.87%
- Native Hawaiian or Other Pacific Islander: 0.01%
- Some other race: 0.55%
- Two or more races: 4.34%
- Hispanic or Latino: 13.37%
The diversity index score in Marion County, Indiana is 64.92%, suggesting a high level of diversity.
Marion County, Indiana Demographics: Household Income
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Marion County, Indiana over the past 12 months, adjusted for 2023 inflation, was $63,450.
The distribution of household income by income bracket in Marion County, Indiana is as follows:
- Less than $20,000: 13.71%
- $20,000–$34,999: 12.43%
- $35,000–$49,999: 13.54%
- $50,000–$74,999: 18.70%
- $75,000–$149,999: 27.59%
- $150,000 or more: 14.04%
Marion County, Indiana Demographics: Educational Attainment
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the breakdown of the total population of Marion County, Indiana, age 25 and older, by educational level is as follows:
- Less than high school graduate: 12.30%
- High school graduate (incl. equivalency): 27.07%
- Some college or associate's degree: 26.57%
- Bachelor's Degree: 21.66%
- Graduate or professional degree: 12.40%
In Marion County, Indiana, 34.06% of the population has a bachelor's degree or higher, while 87.70% are high school graduates or higher.
Marion County, Indiana Demographics: Health Insurance Coverage Status by Sex by Age
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the uninsured rate in Marion County, Indiana is 8.98%.
Rates of people in Marion County, Indiana lacking health insurance coverage, by age group and sex are as follows:
- Under 18: 4.10% of males and 5.23% of females are uninsured
- Ages 18–34: 9.62% of males and 8.33% of females are uninsured
- Ages 35–64: 15.79% of males and 10.21% of females are uninsured
- Ages 65 and older: 0.38% of males and 3.70% of females are uninsured
Marion County, Indiana Demographics: Nativity and Citizenship Status in the United States
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 92.36% of people living in Marion County, Indiana are U.S. citizens. This includes individuals born in the United States, Puerto Rico, or U.S. Island Areas, those born abroad to American parents, and those who became citizens through naturalization. 3.92% of the population obtained U.S. citizenship through the naturalization process. In Marion County, Indiana, 3.92% of the population are naturalized immigrants, who obtained U.S. citizenship through the immigration and naturalization process.
Marion County, Indiana Demographics: Means of Transportation to Work
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the means of transportation to work for the population of Marion County, Indiana are distributed as follows:
- Car, truck, or van: 83.52%
- Public transportation (excluding taxicab): 1.31%
- Bicycle: 0.35%
- Walked: 1.66%
- Taxicab, motorcycle, or other means: 0.89%
- Worked from home: 12.27%
Frequently Asked Questions
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the age breakdown of the population of Marion County, Indiana is as follows:
- Under 5: 7.03%
- Ages 5–17: 18.04%
- Ages 18–24: 9.41%
- Ages 25–34: 16.60%
- Ages 35–54: 24.57%
- Ages 55–64: 11.48%
- 65 or older: 12.87%
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the racial demographics of the population of Marion County, Indiana are as follows:
- White: 50.49%
- Black/African American: 27.31%
- American Indian and Alaska Native: 0.05%
- Asian: 3.87%
- Native Hawaiian or Other Pacific Islander: 0.01%
- Some other race: 0.55%
- Two or more races: 4.34%
- Hispanic or Latino: 13.37%
* Hispanic includes respondents of any race. Other categories are non-Hispanic.
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the distribution of household income in Marion County, Indiana by income bracket is as follows:
- Less than $20,000: 13.71%
- $20,000–$34,999: 12.43%
- $35,000–$49,999: 13.54%
- $50,000–$74,999: 18.70%
- $75,000–$149,999: 27.59%
- $150,000 or more: 14.04%
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, the median household income in Marion County, Indiana in the past 12 months, in 2023 inflation-adjusted dollars, was $63,450.
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 50.49% of the population in Marion County, Indiana identifies as White alone (not Hispanic or Latino).
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 27.31% of the population in Marion County, Indiana identifies as Black or African American alone (not Hispanic or Latino).
According to the U.S. Census Bureau’s 2023 American Community Survey (ACS) 5-Year Estimates, 8.98% of the population of Marion County, Indiana lacks health insurance coverage.
The detailed breakdown by age and sex is as follows:
- Under 18: 4.10% of males and 5.23% of females
- Ages 18–34: 9.62% of males and 8.33% of females
- Ages 35–64: 15.79% of males and 10.21% of females
- Ages 65 and over: 0.38% of males and 3.70% of females