Coverage analysis
What 15 minutes covers in Tempe.
University-dominated and landlocked, Tempe isochrones are compressed by Sky Harbor Airport and the Salt River but efficient along the freeway beltway, making the ASU core and Tempe Marketplace the two distinct trade-area anchors.
At 15 minutes, the Tempe isochrone captures the standard trade area — a zone where trips are planned but customers are willing to cross neighborhood boundaries. Unlike a 30–80 km² in typical US metros; the range varies 3× depending on road density and barriers circle, the real road-network polygon follows Tempe'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 15 minutes: Casual dining, specialty retail, auto service, full-service salon, pet supply. The 15-minute isochrone is the standard input for franchise disclosure documents and protected-territory negotiations.
The city-level population of 180,587 and a median household income of $62,000 give a sense of Tempe'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.