Knox County, Texas Demographics

Population trends, housing costs, income, commuting, and health, all on one page.

Knox County, TX Population Density Map and Area Scores

Area Score

Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.

  • C
    Health Below average
    Less healthy than 76% of counties in Texas
  • D
    Income Well below average
  • D
    Education Well below average

Source: Map AI Methodology

Knox County
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Population density, people per sq mi

Population: density and quick facts

Metric Knox County Texas Avg U.S. Average
Population 3,307 30,160,889 337,468,954
Population density (per sq mi) 3.9 112.2 86.4
Population growth (%/yr) -1.71% 1.41% 0.59%
Median age 43.9 35.9 37.3
Households 1,246 10,982,153 130,235,071

Population in Knox County declined by 4.6% from 2009 to 2024, reaching 3,307 in 2024.

Population Growth 2009–2024

Year Knox County

Race & Ethnicity

Group Share

Age & Sex

The largest generation in Knox County is Gen X, aged 45–60, at 20.1% of residents. That is 0.6 points above Texas as a whole.

Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Texas, 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 50.6% of the people living in Knox County and men 49.4%.

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3,307

100% of everyone living in Knox County

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Economy

Knox County has a the economy index of D, which means it is barely prosperous.

Metric Knox County Texas Avg U.S. Average
Median household income $58,874 $78,939 $80,455
Income growth (%/yr) 4.61% 4.56% 4.80%
Unemployment rate 1.3% 5.2% 5.2%

The median household income in Knox County is about 25% lower than in Texas.

Detailed wealth and income breakdown →

Housing

Metric Knox County Texas Avg U.S. Average
Median home price $34,285 $258,873 $248,835
Median rent $520 $1,402 $1,407
Homeownership rate 77.4% 62.6% 65.2%

The median home price in Knox County is about 5.5 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $520 per month for that long.

Full housing market analysis →

Commute Time & Mobility

Commuters in Knox County spend about 18 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 75 hours, about 3.1 full days, spent commuting.

Metric Knox County Texas Avg U.S. Average
One-way commute (min) 9.0 22.8 22.4
Round-trip commute (min) 17.9 45.6 44.8
Yearly time spent (hours) 75 190 187
Estimated yearly cost $2,316 $5,888 $5,790
Work from home 4.4% 14.4% 15.0%
Highway traffic (vehicles/day) 784 9,879 8,813
Local road traffic (vehicles/day) 82 1,441 1,355

Fastest commutes among counties in Texas: Loving County (3.2 min), King County (5.8 min), Terrell County (6.5 min).
Slowest: Bandera County (38.6 min), San Jacinto County (35.9 min), Liberty County (33.6 min).

The average commute time in Knox County is 9 minutes, shorter than the 23 minutes in Texas.

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.

Commute and transport details →

Education & Households

Knox County has a education index of D, which means it is barely educated.

Metric Knox County Texas Avg U.S. Average
Bachelor's degree or higher 13.7% 29.3% 31.6%
Average household size 2.56 2.69 2.53

Highest education index among counties in Texas: Collin County (0.4), Travis County (0.4), Fort Bend County (0.4).
Lowest: Kenedy County (0.0), Hudspeth County (0.1), La Salle County (0.1).

Health

Knox County has a health index of C, which means it is somewhat healthy.

Metric Knox County Texas Avg U.S. Average
Life expectancy (years) 77.1 78.0 78.3
Self-rated poor health 23.2% 21.1% 16.3%
Smokers 20.4% 19.9% 19.0%

Highest health index among counties in Texas: Collin County (0.8), Travis County (0.8), Denton County (0.8).
Lowest: Starr County (0.7), Brooks County (0.7), Presidio County (0.7).

Full health data →

Frequently Asked Questions

Common questions about Knox County, Texas.

How many people live in Knox County, Texas?

About 3,307 people live in Knox County, Texas, in 1,246 households of 2.6 people on average. The median age is 43.9, so residents are older than the U.S. median of 37.3 by about 7 years.

Is Knox County, Texas mostly urban or rural?

Averaged over its land area, Knox County, Texas has 4 people per square mile, a density typical of rural areas. That is about 4% of the U.S. average of 86.

How affordable is housing in Knox County, Texas?

The median home costs 0.6 times the median household income ($34,285 against $58,874), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $520 a month takes about 11% 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, Texas?

Unemployment in Knox County, Texas is only 1.3%, 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, Texas have a college degree?

13.7% of adults in Knox County, Texas hold a bachelor's degree or higher (about 1 in 7), well below the U.S. share of 31.6%.

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