Jefferson County, Indiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 50th-largest in Indiana
The population of Jefferson County, Indiana is 33,074 as of the 2023 American Community Survey, making it the 50th-largest county in Indiana. The median household income is $59,987, the median home value is $180,600, and the median age is 41.6.
The population of Jefferson County has grown 1.6% since 2010 (32,399 → 32,921), a +0.11% annualized rate.
33,074
Population
+0.11%
Annual growth
92
People / sq mi
$59,987
Median Income
$180,600
Median Home Value
Jefferson County covers 361 sq mi of land at 91.7 people per square mile.
About Jefferson County, IN
What sets Jefferson County apart is where people work — remote work is unusually rare here, at 4.9% versus 14.0% nationally. With 33,074 residents, Jefferson County is a county in Indiana. It ranks #50 among counties in Indiana by population.
Median household income is $59,987, below the US median of $78,538. About 9.3% of residents live below the federal poverty level, below the national 12.4%. The typical home is valued at $180,600, with typical rent around $865.
18.1% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. Just 4.9% of workers are home-based, below the national 14.0%, and the average commute runs about 22 minutes each way.
Jefferson County Population History (2010-2024)
The county of Jefferson County had a population of 32,399 in 2010 and 32,921 in 2024, a 1.6% growth over 14 years. The peak was 33,124 in 2021. Average annual growth rate: 0.12%.
32,921
Population (2024)
32,399
Population (2010)
33,124
Peak (2021)
0.12%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 32,399 |
| 2011 | 32,273 |
| 2012 | 32,442 |
| 2013 | 32,399 |
| 2014 | 32,412 |
| 2015 | 32,305 |
| 2016 | 32,259 |
| 2017 | 32,031 |
| 2018 | 32,169 |
| 2019 | 32,265 |
| 2020 | 33,103 |
| 2021 | 33,124 |
| 2022 | 32,902 |
| 2023 | 32,938 |
| 2024 | 32,921 |
Race & Ethnicity
| White | 93.1% |
| Black or African American | 1.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.9% |
| Two or More Races | 0.0% |
Age & Sex
41.6
Median Age
51.9%
Female
48.1%
Male
18.8%
Age 65+
Age Distribution
Children (under 15): 16.4% · Seniors (65+): 18.8%
Income & Poverty
| Median household income | $59,987$-10,064 vs state |
| Mean household income | $79,892 |
| Per-capita income | $32,420 |
| Poverty rate | 9.3%+0.9% vs state |
| Unemployment rate | 2.3% |
| Employment-to-population | 54.7% |
Top Industries by Employment
The largest employment sector in Jefferson County is manufacturing, accounting for 24.4% of workers.
How residents commute
0.0%
Drive alone
2.5%
Carpool
84.4%
Public transit
4.9%
Work from home
21.9 min
Avg commute
Housing
$180,600$-21,000 vs state
Median home value
$865
Median rent
69.4%
Homeownership rate
14,446
Total housing units
87.9%
Occupied
12.1%
Vacant
30.6%
Renter-occupied
Social & access
91.2%
With health insurance
89.0%
With broadband internet
30.8%
Foreign-born
6.0%
Veterans (18+)
19.8%
With a disability
96.4%
Speak language other than English at home
Education
88.6%
High School+
18.1%
Bachelor's+
Largest cities in Indiana
Other counties in Indiana
Part of Indiana
Metro areas in Indiana
County rankings
Frequently Asked Questions
Jefferson County, Indiana has a population of 33,074 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 50th-largest county in Indiana. Population density is 92 people per square mile.
The population of Jefferson County has grown 1.6% since 2010 (32,399 → 32,921), a +0.11% annualized rate.
The median household income in Jefferson County, Indiana is $59,987, with mean (average) household income of $79,892 and per-capita income of $32,420. 9.3% of residents live below the federal poverty level.
In Jefferson County, the largest racial and ethnic groups are White (93.1%), Hispanic or Latino (1.9%), Black or African American (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Jefferson County, Indiana is 41.6 years. Residents are 51.9% female and 48.1% male.
The median home value in Jefferson County is $180,600 and median monthly rent is $865. 69.4% of occupied housing units are owner-occupied. The county has 14,446 total housing units, 12.1% of which are vacant.
The largest employment sector in Jefferson County, Indiana is manufacturing, employing 24.4% of workers. The unemployment rate is 2.3%.
Indianapolis is among the largest cities associated with Jefferson County, Indiana, with a population of 882,043.
Jefferson County, IN Climate
Jefferson County, IN has an average annual temperature of 12°C (54°F) and receives about 1163 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12°C
Avg Temp
1163
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 29° | 77 mm |
| February | 1° / 33° | 74 mm |
| March | 6° / 43° | 106 mm |
| April | 12° / 53° | 113 mm |
| May | 17° / 63° | 124 mm |
| June | 22° / 71° | 108 mm |
| July | 24° / 75° | 110 mm |
| August | 23° / 73° | 104 mm |
| September | 19° / 67° | 77 mm |
| October | 13° / 55° | 81 mm |
| November | 7° / 45° | 97 mm |
| December | 2° / 35° | 92 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 Jefferson County, IN
The most comfortable months to visit Jefferson County, IN are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -6°C low). May is usually the wettest month.
Where to stay near Jefferson 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.