Type one or more ZIP codes, separated by commas, to load their carrier routes onto the map.
Center on an address or ZIP, or click "Pick a point on map." Choose By Miles (everything inside the circle) or By Quantity (nearest routes until you hit a target address count, capped by a max radius).
Leave a box blank to ignore it. A min with no max keeps everything at or above the min; a max with no min keeps everything at or below it; both keeps the range between them.