Coverage analysis
What 30 minutes on foot 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 30 minutes on foot, the Portland walk-time isochrone captures the extended walking catchment — a wider pedestrian catchment used for destination walking, accessibility auditing, and urban mobility analysis. Unlike a simple ≈ 2.4 km radius circle, the real pedestrian-network polygon follows Portland'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 30 minutes: ≈ 3–8 km². The 30-minute isochrone is the standard input for destination-retail catchment analysis and mixed-use corridor planning.
The city-level population of 652,503 and a median household income of $78,476 give a sense of Portland'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.