Putnam County, Indiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 41st-largest in Indiana
The population of Putnam County, Indiana is 37,091 as of the 2023 American Community Survey, making it the 41st-largest county in Indiana. The median household income is $76,182, the median home value is $205,800, and the median age is 38.4.
The population of Putnam County has declined 0.3% since 2010 (37,903 → 37,804), a -0.02% annualized rate.
37,091
Population
-0.02%
Annual growth
77
People / sq mi
$76,182
Median Income
$205,800
Median Home Value
Putnam County covers 481 sq mi of land at 77.2 people per square mile.
About Putnam County, IN
Putnam County is a county in Indiana with a population of 37,091. It ranks #41 among counties in Indiana by population. The median age is 38.4, in line with the national median. The population is 52.8% male and 47.2% female.
The median household income in Putnam County is $76,182, near the US median of $74,580. 4.7% of residents live below the federal poverty level. Home values sit at a median of $205,800, with monthly rent averaging $883. The homeownership rate of 73.6% is higher than the national rate of 64.8%.
Educational attainment in Putnam County reflects 19.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 9.5% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 26.2 minutes each way.
Putnam County Population History (2010-2024)
The county of Putnam County had a population of 37,903 in 2010 and 37,804 in 2024, a -0.3% growth over 14 years. The peak was 37,903 in 2010. Average annual growth rate: -0.02%.
37,804
Population (2024)
37,903
Population (2010)
37,903
Peak (2010)
-0.02%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 37,903 |
| 2011 | 37,868 |
| 2012 | 37,654 |
| 2013 | 37,508 |
| 2014 | 37,464 |
| 2015 | 37,397 |
| 2016 | 37,151 |
| 2017 | 37,409 |
| 2018 | 37,494 |
| 2019 | 37,566 |
| 2020 | 36,682 |
| 2021 | 37,036 |
| 2022 | 37,300 |
| 2023 | 37,578 |
| 2024 | 37,804 |
Race & Ethnicity
| White | 91.7% |
| Black or African American | 3.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.6% |
| Two or More Races | 0.0% |
Age & Sex
38.4
Median Age
47.2%
Female
52.8%
Male
17.4%
Age 65+
Age Distribution
Children (under 15): 15.6% · Seniors (65+): 17.4%
Income & Poverty
| Median household income | $76,182+$6,131 vs state |
| Mean household income | $89,501 |
| Per-capita income | $34,050 |
| Poverty rate | 4.7%-3.7% vs state |
| Unemployment rate | 1.2% |
| Employment-to-population | 55.5% |
Top Industries by Employment
The largest employment sector in Putnam County is professional & business services, accounting for 24.9% of workers.
How residents commute
0.0%
Drive alone
5.1%
Carpool
78.6%
Public transit
9.5%
Work from home
26.2 min
Avg commute
Housing
$205,800+$4,200 vs state
Median home value
$883
Median rent
73.6%
Homeownership rate
15,148
Total housing units
92.3%
Occupied
7.7%
Vacant
26.4%
Renter-occupied
Social & access
96.1%
With health insurance
93.9%
With broadband internet
21.9%
Foreign-born
8.9%
Veterans (18+)
14.5%
With a disability
96.8%
Speak language other than English at home
Education
90.8%
High School+
19.9%
Bachelor's+
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Part of Indiana
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County rankings
Frequently Asked Questions
Putnam County, Indiana has a population of 37,091 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 41st-largest county in Indiana. Population density is 77 people per square mile.
The population of Putnam County has declined 0.3% since 2010 (37,903 → 37,804), a -0.02% annualized rate.
The median household income in Putnam County, Indiana is $76,182, with mean (average) household income of $89,501 and per-capita income of $34,050. 4.7% of residents live below the federal poverty level.
In Putnam County, the largest racial and ethnic groups are White (91.7%), Black or African American (3.4%), Hispanic or Latino (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Putnam County, Indiana is 38.4 years. Residents are 47.2% female and 52.8% male.
The median home value in Putnam County is $205,800 and median monthly rent is $883. 73.6% of occupied housing units are owner-occupied. The county has 15,148 total housing units, 7.7% of which are vacant.
The largest employment sector in Putnam County, Indiana is professional, scientific, and management services, employing 24.9% of workers. The unemployment rate is 1.2%.
Indianapolis is among the largest cities associated with Putnam County, Indiana, with a population of 882,043.
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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.