Coverage analysis
What 10 minutes covers in San Jose.
Bay-bounded and mountain-walled, San Jose isochrones are wide open along US-101 north and south but collapse sharply against the bay marshes to the north and the Santa Cruz Mountains to the west.
At 10 minutes, the San Jose isochrone captures the neighborhood trade area — the area where customers make routine, repeat visits without deliberate trip planning. Unlike a 12–30 km² in open suburban markets; highly compressed in dense urban grids circle, the real road-network polygon follows San Jose'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 10 minutes: Fast-casual, fitness, neighborhood grocery, nail & hair, dry cleaning, tutoring. The 10-minute isochrone is the standard input for footprint mapping and proximity-marketing radius decisions.
The city-level population of 1,013,240 and a median household income of $117,000 give a sense of San Jose'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.