Coverage analysis
What 30 minutes on foot covers in San Antonio.
San Antonio's loop system (410 and 1604) and radial highways produce cleanly tiered drive-time bands — but rapid northward growth into the Hill Country and along I-10 toward Boerne means trade-area templates from even a few years ago understate suburban reach.
At 30 minutes on foot, the San Antonio walk-time isochrone captures the extended walking catchment — a wider pedestrian catchment used for destination walking, accessibility auditing, and urban mobility analysis. Unlike a simple ≈ 2.4 km radius circle, the real pedestrian-network polygon follows San Antonio's actual street grid, accounts for crossings, parks, and dedicated walk paths, and contracts sharply around freeways, rail corridors, and waterways that break pedestrian continuity.
Walk-shed area at 30 minutes: ≈ 3–8 km². The 30-minute isochrone is the standard input for destination-retail catchment analysis and mixed-use corridor planning.
The city-level population of 1,434,625 and a median household income of $52,455 give a sense of San Antonio's density, but the figure that matters for walkable-retail siting is the population inside the pedestrian polygon — not the city as a whole. That number shifts dramatically depending on whether you're anchored in a high-density urban core or a lower-density neighbourhood where blocks are long and crossings are scarce. Use the tool above to set your actual candidate address, then generate the isochrone to see the real walk shed.