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
Housing cost is the defining feature of Knox County: the median home is valued at $66,800. Knox County is a county in Texas with a population of 3,322.
Median household income is $56,304, below the US median of $78,538. About 8.0% of residents live below the federal poverty level, below the national 12.4%. Housing costs are among the lowest of comparable places: a median home value of $66,800, with typical rent around $661.
Degree attainment is on the lower side for US counties: 15.6% of adults hold a bachelor’s degree, below the national 35.0%. Just 4.0% of workers are home-based, below the national 14.0%, and the average commute runs about 16 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+
Largest cities in Texas
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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.
Knox County, TX Climate
Knox County, TX has an average annual temperature of 17.4°C (63°F) and receives about 638 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
17.4°C
Avg Temp
638
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 5° / 41° | 23 mm |
| February | 8° / 46° | 32 mm |
| March | 13° / 55° | 38 mm |
| April | 18° / 64° | 50 mm |
| May | 22° / 72° | 92 mm |
| June | 27° / 80° | 77 mm |
| July | 29° / 85° | 48 mm |
| August | 28° / 83° | 62 mm |
| September | 24° / 76° | 92 mm |
| October | 18° / 65° | 68 mm |
| November | 11° / 52° | 32 mm |
| December | 6° / 43° | 24 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 Knox County, TX
The most comfortable months to visit Knox County, TX are typically May, April and October, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 36°C high). The coldest is January (near -2°C low). May is usually the wettest month.
Where to stay near Knox County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.