Knox County, Indiana Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Knox County, IN Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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C
Health Below averageLess healthy than 75% of counties in Indiana
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C
Income Below averageLess wealthy than 75% of counties in Indiana
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D
Education Well below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | Knox County | Indiana Avg | U.S. Average |
|---|---|---|---|
| Population | 35,997 | 6,845,048 | 337,468,954 |
| Population density (per sq mi) | 68.8 | 188.1 | 86.4 |
| Population growth (%/yr) | -0.66% | 0.47% | 0.59% |
| Median age | 37.9 | 35.9 | 37.3 |
| Households | 15,164 | 2,713,821 | 130,235,071 |
Population in Knox County declined by 5.3% from 2009 to 2024, reaching 35,997 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Knox County is Gen Z, aged 13–28, at 23.0% of residents. That is 0.8 points above Indiana as a whole.
- Gen Z 13–28 8,292 23.0% +0.8 pts
- Millennials 29–44 6,766 18.8% -2.4 pts
- Gen X 45–60 7,127 19.8% +0.3 pts
- Boomers 61–79 6,777 18.8% +2.1 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Indiana, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 49.9% of the people living in Knox County and men 50.1%.
- Women 49.9% Indiana 50.4%
- Men 50.1% Indiana 49.6%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Knox County
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Economy
Knox County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Knox County | Indiana Avg | U.S. Average |
|---|---|---|---|
| Median household income | $61,328 | $71,967 | $80,455 |
| Income growth (%/yr) | 4.15% | 4.54% | 4.80% |
| Unemployment rate | 3.1% | 4.3% | 5.2% |
The median household income in Knox County is about 15% lower than in Indiana.
Housing
| Metric | Knox County | Indiana Avg | U.S. Average |
|---|---|---|---|
| Median home price | $90,926 | $142,738 | $248,835 |
| Median rent | $795 | $1,062 | $1,407 |
| Homeownership rate | 67.8% | 70.6% | 65.2% |
The median home price in Knox County is about 9.5 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $795 per month for that long.
Commute Time & Mobility
Commuters in Knox County spend about 32 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 132 hours, about 5.5 full days, spent commuting.
| Metric | Knox County | Indiana Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 15.8 | 21.1 | 22.4 |
| Round-trip commute (min) | 31.6 | 42.2 | 44.8 |
| Yearly time spent (hours) | 132 | 176 | 187 |
| Estimated yearly cost | $4,087 | $5,455 | $5,790 |
| Work from home | 2.3% | 10.7% | 15.0% |
| Highway traffic (vehicles/day) | 2,877 | 8,333 | 8,813 |
| Local road traffic (vehicles/day) | 587 | 1,308 | 1,355 |
Fastest commutes among counties in
Indiana:
Knox County (15.8 min), Howard County (15.9 min), Daviess County (16.3 min).
Slowest:
Crawford County (33.6 min), Brown County (32.6 min), Franklin County (31.9 min).
The average commute time in Knox County is 16 minutes, shorter than the 21 minutes in Indiana.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Knox County has a education index of D, which means it is barely educated.
| Metric | Knox County | Indiana Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 15.8% | 26.0% | 31.6% |
| Average household size | 2.26 | 2.45 | 2.53 |
Highest education index among counties in
Indiana:
Hamilton County (0.4), Boone County (0.4), Monroe County (0.3).
Lowest:
LaGrange County (0.1), Crawford County (0.2), Switzerland County (0.2).
Health
Knox County has a health index of C, which means it is somewhat healthy.
| Metric | Knox County | Indiana Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 75.6 | 77.4 | 78.3 |
| Self-rated poor health | 18.2% | 17.1% | 16.3% |
| Smokers | 22.5% | 22.4% | 19.0% |
Highest health index among counties in
Indiana:
Hamilton County (0.8), Monroe County (0.8), Boone County (0.8).
Lowest:
LaGrange County (0.8), Daviess County (0.8), Switzerland County (0.8).
Knox County, IN Compared With Nearby Counties
Knox County, IN is typical in size for this group, 35,997 residents against a local median of 32,996, so the measures below are close to a like for like comparison. The measure that sets Knox County, IN apart most is median home price: $90,926, 18% below the local median of $110,833.
The counties themselves spread $153,962 on median home price, so Knox County, IN sits at one end of an already wide local range rather than apart from it. Knox County, IN has the 4th highest median home price of the 4 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Knox County, IN | 35,997 | $61,328 #3/4 | $90,926 #4/4 | 15.8 min #1/4 |
| Daviess County, IN | 33,658 | $69,555 | $245,191 | 16.3 min |
| Sullivan County, IN | 20,780 | $57,359 | $91,229 | 22.1 min |
| Gibson County, IN | 32,996 | $69,133 | $110,833 | 17.4 min |
Frequently Asked Questions
Common questions about Knox County, Indiana.
How many people live in Knox County, Indiana?
About 35,997 people live in Knox County, Indiana, in 15,164 households of 2.3 people on average. The median age is 37.9, close to the U.S. median of 37.3.
Is Knox County, Indiana mostly urban or rural?
Averaged over its land area, Knox County, Indiana has 69 people per square mile, a density typical of rural areas. That is close to the U.S. average of 86.
Is Knox County, Indiana an affordable place to live?
The median home costs 1.5 times the median household income ($90,926 against $61,328), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $795 a month takes about 16% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is it hard to find a job in Knox County, Indiana?
Unemployment in Knox County, Indiana is only 3.1%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
What share of adults in Knox County, Indiana have a college degree?
15.8% of adults in Knox County, Indiana hold a bachelor's degree or higher (about 1 in 6), well below the U.S. share of 31.6%.
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