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
In Grant County, home values do the distinguishing — a median of $116,000. With 66,377 residents, Grant County is a county in Indiana. It ranks #25 among counties in Indiana by population.
Incomes run on the lower side: a median household income of $54,007, below the US median of $78,538. Roughly 14.7% of residents fall below the poverty line, above the national 12.4%. Housing is relatively affordable, with a median home value of $116,000, with typical rent around $799.
20.4% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. About 7.2% of the workforce is home-based, below the national 14.0%, and the average commute runs about 23 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.
Grant County, IN Climate
Grant County, IN has an average annual temperature of 10.1°C (50°F) and receives about 975 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
10.1°C
Avg Temp
975
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -5° / 24° | 53 mm |
| February | -2° / 28° | 50 mm |
| March | 3° / 38° | 77 mm |
| April | 10° / 49° | 94 mm |
| May | 16° / 60° | 104 mm |
| June | 21° / 70° | 98 mm |
| July | 23° / 74° | 111 mm |
| August | 22° / 72° | 92 mm |
| September | 18° / 65° | 74 mm |
| October | 12° / 53° | 67 mm |
| November | 5° / 41° | 82 mm |
| December | -1° / 30° | 73 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Grant County, IN
The most comfortable months to visit Grant County, IN are typically June, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -9°C low). July is usually the wettest month.
Where to stay near Grant County
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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.