Table 1: Summary of built environment attributes by cluster, Portland metro area.

Urban-form clusterMedian (interquartile range) distance in meters to the nearest: Median (interquartile range) density per km2
Bus stopLight rail stationCommercial area ParkIntersectionsPopulation

Cluster 1: central city161 (80–241)2968 (1451–5465)228 (80–341) 402 (241–569)111 (92–138)2591 (2062–3027)
Cluster 2: city periphery241 (114–402)3817 (2037–7701)332 (161–580) 433 (241–688)53 (38–69)1473 (1125–1793)
Cluster 3: suburb433 (228–809)12876 (9927–15253)628 (322–995) 410 (180–688)24 (10–42)777 (407–1199)
Cluster 4: urban fringe with poor commercial area access1778 (1048–2680)11273 (7816–15331)2255 (1835–2747) 724 (402–1074)5 (0–13)62 (0–334)
Cluster 5: urban fringe with poor park area access1821 (1018–3030)8459 (5413–12436)1049 (613–1527) 1884 (1479–2421)7 (2–17)166 (10–367)
Cluster 6: satellite city6112 (4474–8697)23356 (21622–26551)515 (241–900) 764 (433–1249)26 (8–50)641 (280–1093)