ZIP Code 78621 — Elgin city, TX Demographics & Data

ZIP code 78621 covers Elgin, TX in Bastrop County with a population of about 27,860.

At a glance, the area shows median age of 39.2 (near the U.S. median).

It sits in telephone area codes 512, 737; U.S. House district TX-10; the AUSTIN media market.

Median household income in ZIP 78621 is about $88,246 — about 17% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 8.8%; unemployment rate near 5.2%; 23.9% of adults with a bachelor’s degree or higher (about 9.8 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Construction, Retail trade, and Education; about 16.7% of workers reporting work-from-home (about 1.5 points above the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $262,300 — about 25% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,067 (about 8% below the U.S. median rent ($1,163)), and owner-occupancy near 80.6% (about 15.2 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 78621 in Elgin, TX, a household would need roughly $72,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $1,685. That sits below the local median household income ($88,246), suggesting the typical household income is closer to a workable buy-in level under these assumptions. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for Elgin city, TX as Relatively Moderate (composite score 81.2), which is elevated versus much of the country. The strongest component scores on US5 are flood (86.2) and wildfire (71.8). 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 Elgin city, TX show little to no average snow and around 36.1 inches of annual precipitation.

IRS migration statistics show a net inflow of about 1,314 for ZIP 78621 (Elgin city, 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.