Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.
ZIP 78243 is tagged as a military / base community. Loading DoD locality rates… Rates are a planning reference — confirm with finance or the official DTMO BAH lookup.
ZIP code 78243 covers San Antonio, TX in Bexar County with a population of about 251.
At a glance, the area shows median age of 21.0 versus a U.S. median of about 38.9.
It sits in telephone area codes 210, 726; U.S. House district TX-23; the SAN ANTONIO media market.
San Antonio, TX reads as a military / base-oriented community on US5’s intent model (elevated veteran share (87.1%) and/or base-related place names). Service members and families often look up Basic Allowance for Housing (BAH) rates, on-base mail (PSC / P.O. Box) addresses, and nearby ZIP demographics when relocating.
US5 shows 2026 DoD BAH locality rates for this ZIP’s Military Housing Area on this page (pay grade × with/without dependents). Treat the table as a planning reference and confirm entitlement with your finance office or the official DTMO BAH lookup.
On socioeconomic markers, US5 shows a unemployment rate near 0.0%.
Labor and commute patterns include leading industry context around Public administration, Healthcare, and Retail trade; about 51.8% of workers reporting work-from-home (about 36.6 points above the U.S. share (15.2%)); a mean commute of about 118.0 minutes (U.S. average near 26.8).
FEMA’s National Risk Index rates natural-hazard risk for San Antonio city, TX as Relatively High (composite score 99.4), which is among the highest nationally. The strongest component scores on US5 are flood (99.7) and wildfire (92.4). 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 San Antonio city, TX show little to no average snow.
IRS migration statistics show a net inflow of about 12 for ZIP 78243 (San Antonio 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.
Airport SKF (1.2 miles (1.9 km)) · Baptist University of the Americas (3.7 miles (5.9 km)) · San Antonio Missions National Historical Park (10.7 miles (17.2 km)) · VA: Northwest 410/San Antonio Clinic (8.1 miles (13.0 km))
Full lists and map pins are in the Infrastructure section below.