Marion County, Indiana Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 1st-largest in Indiana

The population of Marion County, Indiana is 971,822 as of the 2023 American Community Survey, making it the 1st-largest county in Indiana. The median household income is $63,450, the median home value is $207,000, and the median age is 34.3.

The population of Marion County has grown 8.5% since 2010 (904,604 → 981,628), a +0.59% annualized rate.

Marion County within Indiana · Source: US Census TIGER/Line via us-atlas

971,822

Population

+0.59%

Annual growth

2454

People / sq mi

$63,450

Median Income

$207,000

Median Home Value

Marion County covers 396 sq mi of land at 2454.1 people per square mile.

About Marion County, IN

Marion County is a county in Indiana with a population of 971,822. It ranks #1 among counties in Indiana by population. The median age is 34.3, younger than the national median. The population is 48.4% male and 51.6% female.

The median household income in Marion County is $63,450, below the US median of $74,580. 11.1% of residents live below the federal poverty level. Home values sit at a median of $207,000, with monthly rent averaging $1,107. The homeownership rate of 55.9% is lower than the national rate of 64.8%.

Educational attainment in Marion County reflects 34.1% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 12.3% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 24.2 minutes each way.

Marion County Population History (2010-2024)

The county of Marion County had a population of 904,604 in 2010 and 981,628 in 2024, a 8.5% growth over 14 years. The peak was 981,628 in 2024. Average annual growth rate: 0.59%.

981,628

Population (2024)

904,604

Population (2010)

981,628

Peak (2024)

0.59%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	904,604	-	-	estimate
2011	911,294	+6,690	+0.74%	estimate
2012	919,917	+8,623	+0.95%	estimate
2013	930,127	+10,210	+1.11%	estimate
2014	936,178	+6,051	+0.65%	estimate
2015	940,152	+3,974	+0.42%	estimate
2016	946,050	+5,898	+0.63%	estimate
2017	951,247	+5,197	+0.55%	estimate
2018	959,370	+8,123	+0.85%	estimate
2019	963,829	+4,459	+0.46%	estimate
2020	976,706	+12,877	+1.34%	estimate
2021	971,682	-5,024	-0.51%	estimate
2022	973,375	+1,693	+0.17%	estimate
2023	975,654	+2,279	+0.23%	estimate
2024	981,628	+5,974	+0.61%	estimate

Race & Ethnicity

White	54.2%
Black or African American	27.6%
Asian	0.0%
Hispanic or Latino (any race)	1.6%
Two or More Races	0.0%

Age & Sex

34.3

Median Age

51.6%

Female

48.4%

Male

12.9%

Age 65+

Age Distribution

Under 5

7.0%

5–9

7.0%

10–14

7.0%

15–19

6.6%

20–24

6.9%

25–34

16.6%

35–44

13.4%

45–54

11.2%

55–59

5.7%

60–64

5.7%

65–74

8.1%

75–84

3.3%

85+

1.5%

Children (under 15): 21.0% · Seniors (65+): 12.9%

Income & Poverty

Median household income	$63,450$-6,601 vs state
Mean household income	$87,280
Per-capita income	$36,355
Poverty rate	11.1%+2.7% vs state
Unemployment rate	3.5%
Employment-to-population	64.7%

Top Industries by Employment

Professional & business services

22.3%

Finance & real estate

12.6%

Manufacturing

10.9%

Education & health care

8.5%

Retail trade

8.4%

Information

6.4%

Construction

6.3%

Arts, entertainment & food

4.4%

The largest employment sector in Marion County is professional & business services, accounting for 22.3% of workers.

How residents commute

1.3%

Drive alone

1.7%

Carpool

73.8%

Public transit

12.3%

Work from home

24.2 min

Avg commute

Housing

$207,000+$5,400 vs state

Median home value

$1,107

Median rent

55.9%

Homeownership rate

439,034

Total housing units

90.3%

Occupied

9.7%

Vacant

44.1%

Renter-occupied

Social & access

91.0%

With health insurance

93.9%

With broadband internet

23.4%

Foreign-born

5.6%

Veterans (18+)

13.4%

With a disability

83.2%

Speak language other than English at home

Education

87.7%

High School+

34.1%

Bachelor's+

Largest cities in Indiana

Indianapolis (882,043)Fort Wayne (266,235)Evansville (116,441)South Bend (102,866)Fishers (100,918)Carmel (100,501)Bloomington (78,791)Hammond (77,098)Noblesville (71,940)Lafayette (70,650)All Indiana cities →

Other counties in Indiana

Lake County (498,990)Allen County (388,791)Hamilton County (357,176)St. Joseph County (272,574)Elkhart County (206,868)Tippecanoe County (187,399)Vanderburgh County (179,908)Hendricks County (179,379)Porter County (174,150)Johnson County (163,983)All Indiana counties →

Part of Indiana

Indiana demographic profile All Indiana data →

Metro areas in Indiana

Chicago (9,359,555)Cincinnati (2,255,257)Indianapolis (2,106,327)Louisville/Jefferson County (1,361,847)Fort Wayne (451,440)South Bend (324,180)Evansville (269,721)Lafayette (225,019)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Common questions about Marion County, IN

What is the population of Marion County, IN?What is the median household income in Marion County, IN?What is the median home value in Marion County, IN?What are the demographics of Marion County, IN?What is the cost of living in Marion County, IN?Is Marion County, IN growing?

Frequently Asked Questions

Marion County, Indiana has a population of 971,822 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 1st-largest county in Indiana. Population density is 2454 people per square mile.

The population of Marion County has grown 8.5% since 2010 (904,604 → 981,628), a +0.59% annualized rate.

The median household income in Marion County, Indiana is $63,450, with mean (average) household income of $87,280 and per-capita income of $36,355. 11.1% of residents live below the federal poverty level.

In Marion County, the largest racial and ethnic groups are White (54.2%), Black or African American (27.6%), Hispanic or Latino (1.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Marion County, Indiana is 34.3 years. Residents are 51.6% female and 48.4% male.

The median home value in Marion County is $207,000 and median monthly rent is $1,107. 55.9% of occupied housing units are owner-occupied. The county has 439,034 total housing units, 9.7% of which are vacant.

The largest employment sector in Marion County, Indiana is professional, scientific, and management services, employing 22.3% of workers. The unemployment rate is 3.5%.

Indianapolis is among the largest cities associated with Marion County, Indiana, with a population of 882,043.