ZIP Code 78663 — Round Mountain town, TX Demographics & Data

ZIP code 78663 covers Round Mountain, TX in Blanco County with a population of about 607.

At a glance, the area shows median age of 59.8 versus a U.S. median of about 38.9.

It sits in telephone area code 830; U.S. House district TX-21; the AUSTIN media market.

Round Mountain, TX ranks among higher-income / higher-home-value communities on US5 (very high median household income (~$156,829)). Searchers often dig into housing affordability stretch, private schools, and neighborhood comparisons rather than entry-level rentals.

Median household income in ZIP 78663 is about $156,829 — about 109% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 2.5%; unemployment rate near 1.4%; 31.1% of adults with a bachelor’s degree or higher (about 2.6 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Construction, Agriculture, and Professional services; about 6.0% of workers reporting work-from-home (about 9.1 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing tenure and rents show owner-occupancy near 84.8% (about 19.4 points above the national owner-occupancy rate (65.4%)).

FEMA’s National Risk Index rates natural-hazard risk for Round Mountain town, TX as Very Low (composite score 33.0), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (74.8) and hurricane (52.3). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Round Mountain town, TX show little to no average snow and around 33.0 inches of annual precipitation.

IRS migration statistics show a net inflow of about 29 for ZIP 78663 (Round Mountain town, TX) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.