Demographics of Jefferson County, Indiana

Jefferson County, Indiana had 33,279 people on July 1, 2025, by the Census Bureau’s estimate: +188 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.

Jefferson County, in four figures

33,279
Population: July 1, 2025, Vintage 2025 estimate.; +0.6%
Change since July 2020: +188 people.; 41.8 ±0.9
Median age: ACS 2020–⁠2024.; $64,577 ±$5,301
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.

Jefferson County, Indiana's population grew 0.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Jefferson 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

Jefferson County, Indiana's population grew 0.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Jefferson 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	33,091	100.0	100.0
2021	32,935	99.5	100.2
2022	32,812	99.2	100.7
2023	32,971	99.6	101.6
2024	33,064	99.9	102.5
2025	33,279	100.6	103.1

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Population of Jefferson 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	33,091	−48	−11	+1	−42
2021	32,935	−156	−110	+17	−80
2022	32,812	−123	−141	+42	0
2023	32,971	+159	−95	+34	+221
2024	33,064	+93	−85	+41	+138
2025	33,279	+215	−86	+33	+269

Age, 2020–2024

The median age is 41.8 ±0.9: for men 41.5 ±1.1 and for women 42.2 ±1.3. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Jefferson County by age, ACS 2020–2024
Age	People	Share	Indiana	United States
Under 5	1,720 ±64	5.2% ±0.2	6.0% ±<0.1	5.6% ±<0.1
5 to 17	4,859 ±371	14.7% ±1.1	17.3% ±0.1	16.3% ±<0.1
18 to 24	3,207 ±283	9.7% ±0.9	9.6% ±0.1	9.1% ±<0.1
25 to 44	8,081 ±402	24.5% ±1.2	25.8% ±0.1	26.9% ±<0.1
45 to 64	8,791 ±428	26.6% ±1.3	24.5% ±0.1	24.8% ±<0.1
65 and over	6,340 ±476	19.2% ±1.4	16.8% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $64,577 ±$5,301, and income per person $33,000 ±$1,803, 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 Jefferson County by income, ACS 2020–2024
Household income	Households	Share	Indiana	United States
Under $25,000	2,064 ±385	16.1% ±3.0	15.0% ±0.2	14.6% ±<0.1
$25,000 to $49,999	2,854 ±444	22.3% ±3.4	19.4% ±0.2	16.7% ±<0.1
$50,000 to $74,999	2,245 ±311	17.6% ±2.4	17.7% ±0.2	15.5% ±<0.1
$75,000 to $99,999	1,935 ±327	15.1% ±2.5	13.9% ±0.2	12.6% ±<0.1
$100,000 to $149,999	2,325 ±335	18.2% ±2.6	17.5% ±0.2	17.5% ±<0.1
$150,000 to $199,999	678 ±206	5.3% ±1.6	8.3% ±0.1	9.6% ±<0.1
$200,000 or more	689 ±187	5.4% ±1.5	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 Jefferson County by age, ACS 2020–2024
Age	Below poverty	Rate	Indiana	United States
All ages	3,808 ±641	12.3% ±2.1	12.3% ±0.2	12.5% ±0.1
Under 18	864 ±246	13.5% ±3.7	16.0% ±0.3	16.1% ±0.1
18 to 59	2,010 ±409	12.6% ±2.5	11.9% ±0.2	11.6% ±0.1
60 and over	934 ±250	10.9% ±2.9	9.6% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Jefferson County, ACS 2020–2024
Measure	Jefferson County	Indiana	United States
Housing units	14,517 ±30	2,976,568 ±617	143,775,355 ±10,234
Occupied	88.1% ±2.3	91.2% ±0.2	89.9% ±0.1
Vacant	11.9% ±2.3	8.8% ±0.2	10.1% ±0.1
Owner occupied	71.8% ±2.8	70.6% ±0.3	65.2% ±0.3
Renter occupied	28.2% ±3.6	29.4% ±0.3	34.8% ±0.1
Median home value	$194,600 ±$9,710	$218,200 ±$739	$332,700 ±$236
Median gross rent	$890 ±$52	$1,062 ±$5	$1,413 ±$2
Median year built	1973 ±2	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 Jefferson County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Indiana	United States
Hispanic or Latino	1,148 ±0	3.5% ±<0.1	8.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	30,012 ±215	91.0% ±0.7	75.4% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	343 ±103	1.0% ±0.3	9.1% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	270 ±76	0.8% ±0.2	2.6% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	10 to 110	< 0.1% to 0.3%	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	31 to 471	0.1% to 1.4%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	903 ±149	2.7% ±0.5	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 Jefferson County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Indiana	United States
Born in the state	21,781 ±747	66.0% ±2.3	67.0% ±0.2	57.3% ±<0.1
Born in another state	10,533 ±741	31.9% ±2.2	25.8% ±0.2	26.9% ±<0.1
Born a citizen outside the states	95 to 355	0.3% to 1.1%	0.8% ±<0.1	1.7% ±<0.1
Born abroad	459 ±132	1.4% ±0.4	6.3% ±0.1	14.1% ±<0.1
Naturalized citizens	143 ±64	0.4% ±0.2	2.6% ±0.1	7.4% ±<0.1
Not citizens	316 ±132	1.0% ±0.4	3.7% ±0.1	6.8% ±<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%.

Jefferson County among the counties of Indiana

51st of 92 by population, July 2025. Every one is listed on the Indiana page.

Counties of Indiana near Jefferson County in population, July 2025
County	July 2025	Change since 2020
Steuben County	34,799	+1.0%
Miami County	34,487	−4.0%
Daviess County	34,209	+2.5%
Jasper County	33,894	+3.0%
Clinton County	33,322	+0.4%
Jefferson County	33,279	+0.6%
Gibson County	33,091	+0.1%
Greene County	31,165	+1.2%
Wabash County	30,713	−0.7%
Ripley County	29,434	+1.6%
Wells County	28,883	+2.6%

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