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
Castro County is a county in Texas with a population of 7,328. It ranks #182 among counties in Texas by population. The median age is 34.9, younger than the national median. The population is 50.7% male and 49.3% female.
The median household income in Castro County is $63,485, below the US median of $74,580. 15.4% of residents live below the federal poverty level. Home values sit at a median of $94,900, with monthly rent averaging $910. The homeownership rate of 69.2% is higher than the national rate of 64.8%.
Educational attainment in Castro County reflects 21.0% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 3.9% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 14.3 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+
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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.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.