Coverage analysis
What 10 minutes covers in Portland.
Portland is bisected by the Willamette River with a limited number of bridges, and hemmed in by the Tualatin Mountains to the west — both factors warp drive-time polygons in ways that catch newcomers off guard. The urban growth boundary creates a hard cap on suburban reach that few other US metros share.
At 10 minutes, the Portland 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 Portland'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 652,503 and a median household income of $78,476 give a sense of Portland'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.