Grant County, Indiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 25th-largest in Indiana
The population of Grant County, Indiana is 66,377 as of the 2023 American Community Survey, making it the 25th-largest county in Indiana. The median household income is $54,007, the median home value is $116,000, and the median age is 39.3.
The population of Grant County has declined 4.9% since 2010 (69,906 → 66,458), a -0.36% annualized rate.
66,377
Population
-0.36%
Annual growth
160
People / sq mi
$54,007
Median Income
$116,000
Median Home Value
Grant County covers 414 sq mi of land at 160.3 people per square mile.
About Grant County, IN
Grant County is a county in Indiana with a population of 66,377. It ranks #25 among counties in Indiana by population. The median age is 39.3, in line with the national median. The population is 48.1% male and 51.9% female.
The median household income in Grant County is $54,007, below the US median of $74,580. 14.7% of residents live below the federal poverty level. Home values sit at a median of $116,000, with monthly rent averaging $799. The homeownership rate of 71.8% is higher than the national rate of 64.8%.
Educational attainment in Grant County reflects 20.4% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 22.5 minutes each way.
Grant County Population History (2010-2024)
The county of Grant County had a population of 69,906 in 2010 and 66,458 in 2024, a -4.9% growth over 14 years. The peak was 69,906 in 2010. Average annual growth rate: -0.36%.
66,458
Population (2024)
69,906
Population (2010)
69,906
Peak (2010)
-0.36%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 69,906 |
| 2011 | 69,633 |
| 2012 | 69,110 |
| 2013 | 68,887 |
| 2014 | 68,381 |
| 2015 | 67,543 |
| 2016 | 66,731 |
| 2017 | 66,373 |
| 2018 | 66,112 |
| 2019 | 65,836 |
| 2020 | 66,507 |
| 2021 | 66,189 |
| 2022 | 66,020 |
| 2023 | 66,303 |
| 2024 | 66,458 |
Race & Ethnicity
| White | 85.0% |
| Black or African American | 4.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 4.2% |
| Two or More Races | 0.0% |
Age & Sex
39.3
Median Age
51.9%
Female
48.1%
Male
19.0%
Age 65+
Age Distribution
Children (under 15): 17.6% · Seniors (65+): 19.0%
Income & Poverty
| Median household income | $54,007$-16,044 vs state |
| Mean household income | $70,918 |
| Per-capita income | $29,023 |
| Poverty rate | 14.7%+6.3% vs state |
| Unemployment rate | 4.0% |
| Employment-to-population | 55.3% |
Top Industries by Employment
The largest employment sector in Grant County is professional & business services, accounting for 30.4% of workers.
How residents commute
0.2%
Drive alone
5.9%
Carpool
75.1%
Public transit
7.2%
Work from home
22.5 min
Avg commute
Housing
$116,000$-85,600 vs state
Median home value
$799
Median rent
71.8%
Homeownership rate
29,878
Total housing units
89.6%
Occupied
10.4%
Vacant
28.2%
Renter-occupied
Social & access
92.8%
With health insurance
91.5%
With broadband internet
22.6%
Foreign-born
8.9%
Veterans (18+)
19.6%
With a disability
96.5%
Speak language other than English at home
Education
88.8%
High School+
20.4%
Bachelor's+
Largest cities in Indiana
Other counties in Indiana
Part of Indiana
Metro areas in Indiana
County rankings
Frequently Asked Questions
Grant County, Indiana has a population of 66,377 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 25th-largest county in Indiana. Population density is 160 people per square mile.
The population of Grant County has declined 4.9% since 2010 (69,906 → 66,458), a -0.36% annualized rate.
The median household income in Grant County, Indiana is $54,007, with mean (average) household income of $70,918 and per-capita income of $29,023. 14.7% of residents live below the federal poverty level.
In Grant County, the largest racial and ethnic groups are White (85.0%), Black or African American (4.9%), Hispanic or Latino (4.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Grant County, Indiana is 39.3 years. Residents are 51.9% female and 48.1% male.
The median home value in Grant County is $116,000 and median monthly rent is $799. 71.8% of occupied housing units are owner-occupied. The county has 29,878 total housing units, 10.4% of which are vacant.
The largest employment sector in Grant County, Indiana is professional, scientific, and management services, employing 30.4% of workers. The unemployment rate is 4.0%.
Indianapolis is among the largest cities associated with Grant County, Indiana, with a population of 882,043.
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Full rankings of Indiana counties
Statewide data for Indiana
Population, race, income, age, and trends across Indiana
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.