Demographics of Putnam County, Indiana

Putnam County, Indiana had 37,876 people on July 1, 2025, by the Census Bureau’s estimate: +1,180 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Putnam County, in four figures

37,876
Population: July 1, 2025, Vintage 2025 estimate.; +3.2%
Change since July 2020: +1,180 people.; 38.4 ±0.4
Median age: ACS 2020–⁠2024.; $78,378 ±$6,390
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Putnam County, Indiana's population grew 3.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Putnam County, Indiana's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Putnam County, Indiana's population grew 3.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Putnam County, Indiana's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	36,696	100.0	100.0
2021	37,026	100.9	100.2
2022	37,107	101.1	100.7
2023	37,200	101.4	101.6
2024	37,758	102.9	102.5
2025	37,876	103.2	103.1

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Population of Putnam County, Indiana on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	36,696	−39	−30	0	−20
2021	37,026	+330	−71	+26	+359
2022	37,107	+81	−113	+46	+180
2023	37,200	+93	−71	+64	+112
2024	37,758	+558	−53	+71	+538
2025	37,876	+118	−55	+51	+120

Age, 2020–2024

The median age is 38.4 ±0.4: for men 37.6 ±0.5 and for women 39.8 ±0.9. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Putnam County by age, ACS 2020–2024
Age	People	Share	Indiana	United States
Under 5	1,771 ±57	4.8% ±0.2	6.0% ±<0.1	5.6% ±<0.1
5 to 17	5,438 ±337	14.6% ±0.9	17.3% ±0.1	16.3% ±<0.1
18 to 24	4,624 ±327	12.4% ±0.9	9.6% ±0.1	9.1% ±<0.1
25 to 44	9,608 ±409	25.8% ±1.1	25.8% ±0.1	26.9% ±<0.1
45 to 64	9,371 ±415	25.1% ±1.1	24.5% ±0.1	24.8% ±<0.1
65 and over	6,468 ±427	17.3% ±1.1	16.8% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $78,378 ±$6,390, and income per person $34,784 ±$1,507, in 2024 dollars. The median is $71,957 ±$352 in Indiana and $80,734 ±$166 in the United States.

Households by income

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Households in Putnam County by income, ACS 2020–2024
Household income	Households	Share	Indiana	United States
Under $25,000	2,123 ±366	15.0% ±2.6	15.0% ±0.2	14.6% ±<0.1
$25,000 to $49,999	2,619 ±380	18.5% ±2.7	19.4% ±0.2	16.7% ±<0.1
$50,000 to $74,999	2,119 ±321	15.0% ±2.3	17.7% ±0.2	15.5% ±<0.1
$75,000 to $99,999	2,303 ±330	16.3% ±2.3	13.9% ±0.2	12.6% ±<0.1
$100,000 to $149,999	2,811 ±324	19.9% ±2.3	17.5% ±0.2	17.5% ±<0.1
$150,000 to $199,999	1,298 ±241	9.2% ±1.7	8.3% ±0.1	9.6% ±<0.1
$200,000 or more	869 ±183	6.1% ±1.3	8.2% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Putnam County by age, ACS 2020–2024
Age	Below poverty	Rate	Indiana	United States
All ages	2,846 ±521	8.7% ±1.6	12.3% ±0.2	12.5% ±0.1
Under 18	716 ±201	10.1% ±2.8	16.0% ±0.3	16.1% ±0.1
18 to 59	1,494 ±328	9.0% ±2.0	11.9% ±0.2	11.6% ±0.1
60 and over	636 ±149	7.0% ±1.6	9.6% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Putnam County, ACS 2020–2024
Measure	Putnam County	Indiana	United States
Housing units	15,268 ±89	2,976,568 ±617	143,775,355 ±10,234
Occupied	92.6% ±1.7	91.2% ±0.2	89.9% ±0.1
Vacant	7.4% ±1.6	8.8% ±0.2	10.1% ±0.1
Owner occupied	75.4% ±2.1	70.6% ±0.3	65.2% ±0.3
Renter occupied	24.6% ±2.9	29.4% ±0.3	34.8% ±0.1
Median home value	$218,900 ±$9,627	$218,200 ±$739	$332,700 ±$236
Median gross rent	$884 ±$41	$1,062 ±$5	$1,413 ±$2
Median year built	1981 ±3	1976 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Putnam County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Indiana	United States
Hispanic or Latino	839 ±0	2.3% ±<0.1	8.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	33,773 ±109	90.6% ±0.3	75.4% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	1,226 ±184	3.3% ±0.5	9.1% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	489 ±89	1.3% ±0.2	2.6% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	5 to 61	< 0.1% to 0.2%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 27	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	28 to 180	0.1% to 0.5%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	816 ±230	2.2% ±0.6	3.8% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Putnam County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Indiana	United States
Born in the state	27,794 ±618	74.6% ±1.7	67.0% ±0.2	57.3% ±<0.1
Born in another state	8,319 ±649	22.3% ±1.7	25.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	280 ±118	0.8% ±0.3	0.8% ±<0.1	1.7% ±<0.1
Born abroad	887 ±222	2.4% ±0.6	6.3% ±0.1	14.1% ±<0.1
Naturalized citizens	433 ±179	1.2% ±0.5	2.6% ±0.1	7.4% ±<0.1
Not citizens	454 ±165	1.2% ±0.4	3.7% ±0.1	6.8% ±<0.1

Putnam County among the counties of Indiana

40th of 92 by population, July 2025. Every one is listed on the Indiana page.

Counties of Indiana near Putnam County in population, July 2025
County	July 2025	Change since 2020
DeKalb County	44,535	+2.9%
Dubois County	44,016	+0.9%
LaGrange County	41,305	+1.9%
Harrison County	40,437	+1.9%
Montgomery County	38,954	+2.7%
Putnam County	37,876	+3.2%
Cass County	37,836	+0.1%
Huntington County	37,224	+1.6%
Adams County	36,650	+2.2%
Knox County	35,652	−1.7%
Whitley County	35,046	+2.1%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026