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Circle is measured from where you first press; Lasso follows your outline. The switch under Add and Remove decides which ZIPs count: Touching (any ZIP the shape touches), Center in (the ZIP's center point is inside) or Fully in (the whole ZIP is inside). For an exact distance, type a ZIP above and press Radius.
To leave out PO Box or single-organization ZIPs (a company, university or government office), or to keep only those, uncheck the others under ZIP types in the list panel.
The dotted grip on each box moves it: click or tap the grip to fold the box away, drag it to put the box somewhere else.
About ZipZoomer: what it does, the data it uses, and answers to common questions.
ZipZoomer lets you draw a circle or a freehand lasso on a map of the United States and lists every ZIP code inside it. Draw around a neighborhood, along a river, or around a sales territory, then copy the ZIP codes or download them as a CSV file.
The map above opens over Atlanta with the Lasso tool chosen. Hold SHIFT and drag to draw your first shape, or search a city, county or ZIP code to start somewhere else. It works the same with a mouse, a trackpad or a touchscreen.
Circle suits a distance from one spot: a store, an office, a job site. The readout shows the radius as you drag, so you can stop at 5 or 12 miles. For an exact distance around a ZIP code, the radius card lets you type it.
Lasso suits any other shape: one side of a river, the towns along a highway, a district that is long and thin, or the edge of a territory you already have on paper. Draw slowly near the edges you care about; the lasso follows your pointer exactly.
A drawn edge usually cuts through some ZIP codes. The edge rule decides which of them join the list. Touching, the default, takes every ZIP code the shape reaches, even at one corner. Center in takes those whose center point is inside. Fully in takes only those entirely inside. ZipZoomer tests each shape against the ZIP code’s real outline from the 2020 Census, not a single point, so a large ZIP code that pokes into your shape is not missed under Touching. PO Box and single-organization ZIP codes, which have no outline, show as dots and count when the dot is inside.
Already have ZIP codes in a spreadsheet? Paste the list into the list panel to see them highlighted on the map, then draw to add the gaps or trim the edges.
The lasso is freehand: it follows the pointer, so moving in straight strokes gives you straight sides. When you let go, the shape closes with a straight line back to its start. There is no click-by-click polygon tool.
Hold OPTION (ALT on Windows) and draw over the part to remove, or tap Remove on a touchscreen and draw. Every ZIP code that shape takes under the current edge rule leaves the list. Undo puts them back.
With Touching, yes: any ZIP code the shape reaches joins. Switch to Center in to take only those whose center point is inside, or Fully in for only those wholly inside. Pick the rule before you draw.
ZipZoomer keeps the ZIP list, not the shape. The list stays in your browser for your next visit, Copy share link puts it in a link anyone can open, and Save map image downloads a picture of the map with the ZIP codes highlighted.
Yes. The list panel shows the 2020 Census population of the ZIP codes you selected, with the number of counties and states they fall in.
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