In 2020, McMullen County, TX had a population of 724 people with a median age of 36.1 and a median household income of $67,386. Between 2019 and 2020 the population of McMullen County, TX declined from 774 to 724, a −6.46% decrease and its median household income grew from $62,000 to $67,386, a 8.69% increase.
The 5 largest ethnic groups in McMullen County, TX are White (Hispanic) (53.7%), White (Non-Hispanic) (35.1%), Two+ (Hispanic) (8.56%), Other (Hispanic) (2.62%), and Black or African American (Non-Hispanic) (0%).
None of the households in McMullen County, TX reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
95.3% of the residents in McMullen County, TX are U.S. citizens.
In 2020, the median property value in McMullen County, TX was $111,300, and the homeownership rate was 84.7%.
Most people in McMullen County, TX drove alone to work, and the average commute time was 35 minutes. The average car ownership in McMullen County, TX was 2 cars per household.