Castro County, Texas Demographics 2026

Population Overview

Castro County is located in Texas with a total population of 7,328. It is the 182nd most populous county out of 254 in Texas. The county encompasses 3 Census-designated places.

Age Demographics

The median age in Castro County is 34.9 years. This is 2% lower than the state median of 35.5 years. With 28.9% of the population under 18, Castro County has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Castro County is $63,485. This is 17% lower than the state median of $76,292. It is also 19% lower than the national median of $78,538. The poverty rate stands at 14.0%. This is 1% higher than the state poverty rate of 13.8%. The unemployment rate is 2.6%. This is 48% lower than the state rate of 5.1%. The median home value is $94,900. Housing costs are 64% lower than the state median of $260,400. With a home-value-to-income ratio of just 1.5x, Castro County is one of the most affordable housing markets in the area. 69.2% of occupied housing units are owner-occupied. This homeownership rate is 11% higher than the state average of 62.6%.

Race & Ethnicity

The largest racial or ethnic group in Castro County is Hispanic or Latino, making up 65.3% of the population. White (non-Hispanic) residents account for 30.0%. The Black or African American population (1.2%) is well below the state average of 11.9%. The Hispanic or Latino population is significantly higher than the state average (65.3% vs 39.5%). The Asian population (1.2%) is well below the state average of 5.3%.

Education

21.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 37% lower than the state rate of 33.1%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 76.3%.

Data Sources & Methodology

All figures for Castro County come from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023), with comparisons drawn against Texas and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.