Coverage analysis
What 30 minutes 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 30 minutes, the Phoenix isochrone captures the regional catchment — a zone where trips are planned but customers are willing to cross neighborhood boundaries. Unlike a 100–350 km² circle, the real road-network polygon follows Phoenix's actual highway corridors, accounts for bridge and interchange chokepoints, and respects the natural and built barriers that force drivers to detour.
Best-fit categories at 30 minutes: Big-box, regional dining, car dealership, furniture, healthcare anchor, sporting goods. The 30-minute isochrone is the standard input for cannibalization studies and multi-unit expansion modeling.
The city-level population of 1,608,139 and a median household income of $58,688 give a sense of Phoenix's economic density, but the figure that matters for site selection is the population inside the polygon — not the city as a whole. That number shifts dramatically depending on whether you're drawing from a high-density urban core or a lower-density suburban corridor. Use the tool above to set your actual candidate location, then generate the isochrone to see the real catchment.