Coverage analysis
What 15 minutes on foot covers in Phoenix.
Phoenix is a near-perfect grid stretched across a flat valley, which produces some of the cleanest, most predictable drive-time polygons of any major US metro. The constraints come from mountain preserves (Camelback, South Mountain, the McDowells) and the freeway loop system (101, 202, 303).
At 15 minutes on foot, the Phoenix walk-time isochrone captures the standard walk shed — the standard walk shed used in transit planning and urban design — where trips are intentional but still comfortably on foot. Unlike a simple ≈ 1.2 km radius circle, the real pedestrian-network polygon follows Phoenix'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 15 minutes: ≈ 1.0–3.0 km² — larger in grid cities, compressed by barriers and dead-ends. The 15-minute isochrone is the standard input for transit-oriented development studies, 15-minute city planning, and urban retail site selection.
The city-level population of 1,608,139 and a median household income of $58,688 give a sense of Phoenix'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.