McMullen County, Texas Demographics 2026

Population Overview

McMullen County is located in Texas with a total population of 623. It is the 251st most populous county out of 254 in Texas.

Age Demographics

The median age in McMullen County is 32.6 years. This is 8% lower than the state median of 35.5 years. With 38.0% of the population under 18, McMullen County has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in McMullen County is $45,833. This is 40% lower than the state median of $76,292. Compared to the national median of $78,538, household income here is 42% lower. The poverty rate stands at 9.2%. This is 34% lower than the state poverty rate of 13.8%. The unemployment rate is 0.0%. This is 100% lower than the state rate of 5.1%. The median home value is $108,800. Housing costs are 58% lower than the state median of $260,400. With a home-value-to-income ratio of just 2.4x, McMullen County is one of the most affordable housing markets in the area. 76.8% of occupied housing units are owner-occupied. This homeownership rate is 23% higher than the state average of 62.6%.

Race & Ethnicity

The largest racial or ethnic group in McMullen County is Hispanic or Latino, making up 54.4% of the population. White (non-Hispanic) residents account for 44.6%.

Education

15.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 55% 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 88.4%.