Castro County, Texas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 182nd-largest in Texas
The population of Castro County, Texas is 7,328 as of the 2023 American Community Survey, making it the 182nd-largest county in Texas. The median household income is $63,485, the median home value is $94,900, and the median age is 34.9.
The population of Castro County has declined 9.2% since 2010 (8,125 → 7,380), a -0.68% annualized rate.
7,328
Population
-0.68%
Annual growth
8
People / sq mi
$63,485
Median Income
$94,900
Median Home Value
Castro County covers 894 sq mi of land at 8.2 people per square mile.
About Castro County, TX
In Castro County, home values do the distinguishing — a median of $94,900. With 7,328 residents, Castro County is a county in Texas.
Household earnings are middling, with a median of $63,485 — below the US median of $78,538. Roughly 15.4% of residents fall below the poverty line, above the national 12.4%. Housing costs are among the lowest of comparable places: a median home value of $94,900, with typical rent around $910.
Roughly 21.0% of adults have a bachelor’s, below the national 35.0%. Just 3.9% of workers are home-based, below the national 14.0%, and the average commute runs about 14 minutes each way.
Castro County Population History (2010-2024)
The county of Castro County had a population of 8,125 in 2010 and 7,380 in 2024, a -9.2% growth over 14 years. The peak was 8,254 in 2012. Average annual growth rate: -0.68%.
7,380
Population (2024)
8,125
Population (2010)
8,254
Peak (2012)
-0.68%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 8,125 |
| 2011 | 8,089 |
| 2012 | 8,254 |
| 2013 | 8,108 |
| 2014 | 7,912 |
| 2015 | 7,774 |
| 2016 | 7,730 |
| 2017 | 7,668 |
| 2018 | 7,529 |
| 2019 | 7,484 |
| 2020 | 7,333 |
| 2021 | 7,369 |
| 2022 | 7,307 |
| 2023 | 7,330 |
| 2024 | 7,380 |
Race & Ethnicity
| White | 54.0% |
| Black or African American | 1.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.9% |
| Two or More Races | 0.0% |
Age & Sex
34.9
Median Age
49.3%
Female
50.7%
Male
16.8%
Age 65+
Age Distribution
Children (under 15): 24.0% · Seniors (65+): 16.8%
Income & Poverty
| Median household income | $63,485$-12,807 vs state |
| Mean household income | $81,404 |
| Per-capita income | $27,587 |
| Poverty rate | 15.4%+4.9% vs state |
| Unemployment rate | 1.8% |
| Employment-to-population | 64.8% |
Top Industries by Employment
The largest employment sector in Castro County is professional & business services, accounting for 21.8% of workers.
How residents commute
1.3%
Drive alone
0.8%
Carpool
75.4%
Public transit
3.9%
Work from home
14.3 min
Avg commute
Housing
$94,900$-165,500 vs state
Median home value
$910
Median rent
69.2%
Homeownership rate
3,026
Total housing units
80.2%
Occupied
19.8%
Vacant
30.8%
Renter-occupied
Social & access
78.6%
With health insurance
90.5%
With broadband internet
12.7%
Foreign-born
8.5%
Veterans (18+)
8.3%
With a disability
47.1%
Speak language other than English at home
Education
76.3%
High School+
21.0%
Bachelor's+
Largest cities in Texas
Other counties in Texas
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County rankings
Frequently Asked Questions
Castro County, Texas has a population of 7,328 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 182nd-largest county in Texas. Population density is 8 people per square mile.
The population of Castro County has declined 9.2% since 2010 (8,125 → 7,380), a -0.68% annualized rate.
The median household income in Castro County, Texas is $63,485, with mean (average) household income of $81,404 and per-capita income of $27,587. 15.4% of residents live below the federal poverty level.
In Castro County, the largest racial and ethnic groups are White (54.0%), Hispanic or Latino (1.9%), Black or African American (1.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Castro County, Texas is 34.9 years. Residents are 49.3% female and 50.7% male.
The median home value in Castro County is $94,900 and median monthly rent is $910. 69.2% of occupied housing units are owner-occupied. The county has 3,026 total housing units, 19.8% of which are vacant.
The largest employment sector in Castro County, Texas is professional, scientific, and management services, employing 21.8% of workers. The unemployment rate is 1.8%.
Houston is among the largest cities associated with Castro County, Texas, with a population of 2,300,419.
Castro County, TX Climate
Castro County, TX has an average annual temperature of 13.3°C (56°F) and receives about 451 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
13.3°C
Avg Temp
451
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 2° / 35° | 11 mm |
| February | 4° / 40° | 15 mm |
| March | 8° / 47° | 19 mm |
| April | 13° / 55° | 21 mm |
| May | 18° / 64° | 50 mm |
| June | 23° / 73° | 81 mm |
| July | 25° / 76° | 53 mm |
| August | 24° / 75° | 75 mm |
| September | 20° / 68° | 58 mm |
| October | 14° / 57° | 37 mm |
| November | 7° / 45° | 19 mm |
| December | 3° / 37° | 12 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 Castro County, TX
The most comfortable months to visit Castro County, TX are typically September, May and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 33°C high). The coldest is January (near -6°C low). June is usually the wettest month.
Where to stay near Castro County
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Top-rated places to stay near Castro County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.