In 2021, Round Mountain, TX had a population of 117 people with a median age of 50.1 and a median household income of $64,712. Between 2020 and 2021 the population of Round Mountain, TX declined from 146 to 117, a −19.9% decrease and its median household income grew from $61,063 to $64,712, a 5.98% increase.
The 5 largest ethnic groups in Round Mountain, TX are White (Non-Hispanic) (88%), Other (Hispanic) (6.84%), White (Hispanic) (5.13%), Black or African American (Non-Hispanic) (0%), and Black or African American (Hispanic) (0%).
None of the households in Round Mountain, 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.
100% of the residents in Round Mountain, TX are U.S. citizens.
Most people in Round Mountain, TX drove alone to work, and the average commute time was 17.5 minutes. The average car ownership in Round Mountain, TX was 2 cars per household.