Knox County, Texas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 213th-largest in Texas
The population of Knox County, Texas is 3,322 as of the 2023 American Community Survey, making it the 213th-largest county in Texas. The median household income is $56,304, the median home value is $66,800, and the median age is 40.5.
The population of Knox County has declined 12.6% since 2010 (3,723 → 3,255), a -0.95% annualized rate.
3,322
Population
-0.95%
Annual growth
4
People / sq mi
$56,304
Median Income
$66,800
Median Home Value
Knox County covers 851 sq mi of land at 3.9 people per square mile.
About Knox County, TX
Knox County is a county in Texas with a population of 3,322. It ranks #213 among counties in Texas by population. The median age is 40.5, older than the national median. The population is 49.3% male and 50.7% female.
The median household income in Knox County is $56,304, below the US median of $74,580. 8.0% of residents live below the federal poverty level. Home values sit at a median of $66,800, with monthly rent averaging $661. The homeownership rate of 78.1% is higher than the national rate of 64.8%.
Educational attainment in Knox County reflects 15.6% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 4.0% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 16.2 minutes each way.
Knox County Population History (2010-2024)
The county of Knox County had a population of 3,723 in 2010 and 3,255 in 2024, a -12.6% growth over 14 years. The peak was 3,797 in 2014. Average annual growth rate: -0.93%.
3,255
Population (2024)
3,723
Population (2010)
3,797
Peak (2014)
-0.93%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 3,723 |
| 2011 | 3,721 |
| 2012 | 3,729 |
| 2013 | 3,719 |
| 2014 | 3,797 |
| 2015 | 3,790 |
| 2016 | 3,729 |
| 2017 | 3,669 |
| 2018 | 3,651 |
| 2019 | 3,663 |
| 2020 | 3,351 |
| 2021 | 3,325 |
| 2022 | 3,288 |
| 2023 | 3,318 |
| 2024 | 3,255 |
Race & Ethnicity
| White | 71.5% |
| Black or African American | 4.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
40.5
Median Age
50.7%
Female
49.3%
Male
18.7%
Age 65+
Age Distribution
Children (under 15): 21.8% · Seniors (65+): 18.7%
Income & Poverty
| Median household income | $56,304$-19,988 vs state |
| Mean household income | $71,418 |
| Per-capita income | $26,698 |
| Poverty rate | 8.0%-2.5% vs state |
| Unemployment rate | 0.7% |
| Employment-to-population | 57.3% |
Top Industries by Employment
The largest employment sector in Knox County is professional & business services, accounting for 25.2% of workers.
How residents commute
0.0%
Drive alone
1.2%
Carpool
77.9%
Public transit
4.0%
Work from home
16.2 min
Avg commute
Housing
$66,800$-193,600 vs state
Median home value
$661
Median rent
78.1%
Homeownership rate
1,802
Total housing units
69.7%
Occupied
30.3%
Vacant
21.9%
Renter-occupied
Social & access
82.0%
With health insurance
92.0%
With broadband internet
13.5%
Foreign-born
4.8%
Veterans (18+)
17.3%
With a disability
76.9%
Speak language other than English at home
Education
85.2%
High School+
15.6%
Bachelor's+
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County rankings
Frequently Asked Questions
Knox County, Texas has a population of 3,322 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 213th-largest county in Texas. Population density is 4 people per square mile.
The population of Knox County has declined 12.6% since 2010 (3,723 → 3,255), a -0.95% annualized rate.
The median household income in Knox County, Texas is $56,304, with mean (average) household income of $71,418 and per-capita income of $26,698. 8.0% of residents live below the federal poverty level.
In Knox County, the largest racial and ethnic groups are White (71.5%), Black or African American (4.0%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Knox County, Texas is 40.5 years. Residents are 50.7% female and 49.3% male.
The median home value in Knox County is $66,800 and median monthly rent is $661. 78.1% of occupied housing units are owner-occupied. The county has 1,802 total housing units, 30.3% of which are vacant.
The largest employment sector in Knox County, Texas is professional, scientific, and management services, employing 25.2% of workers. The unemployment rate is 0.7%.
Houston is among the largest cities associated with Knox County, Texas, with a population of 2,300,419.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.