ZIP codes in an area

How to use it

Tap the map to place the points of your area’s edge and tap the first one to close it. Then drag the points around, or add more from the middle of each side. If you already have the area in Google Earth, Google My Maps or a GIS program, open it: KML, KMZ, GeoJSON and GPX all work, and if the file has several polygons they’re all used.

Choose which ZIP codes count: the ones whose center is inside, or every one that touches the area. The list has the city, county, state and population of each ZIP code; copy it with commas or one per line, download it as a CSV, and share the link to keep the area you drew.

An example: Midtown Manhattan

The example area runs from 34th to 59th Street, river to river: 2.4 square miles (6.3 km²). 23 ZIP codes have their center inside, home to 133,890 people; the most populated are 10019 (44,942), 10022 (34,049) and 10036 (31,036). Many others have no residents at all: Manhattan has ZIP codes for single office towers.

Center inside or any part inside

A ZIP code isn’t a point: the Census Bureau maps its area (the ZCTA) and places an interior point inside it. With “Center inside”, a ZIP counts when that point falls in your area, which is what most tools of this kind do. With “Any part inside” we ask the Census Bureau’s map service (TIGERweb) which areas touch yours, so you also get the border ZIP codes that are only partly in; they’re marked in the list.

Population is for each whole ZIP code, even when only part of it is inside. To find how many people live exactly inside a circle, use Population in a radius.

ZIP codes with no area

Of the more than 41,000 ZIP codes the Postal Service uses, the Census Bureau maps 33,642 areas. PO box ZIPs, ZIP codes for a single building or a large company, and those created after 2020 have no area. If you need them, tick “Add ZIP codes with no area”: you get 7,335 more, as approximate points from GeoNames (usually the center of their town), and they count only if that point is inside.

What it’s for

Turning a delivery zone, a sales or franchise territory, a service area or the reach of an ad or direct mail campaign into a list of ZIP codes. Since the list includes each ZIP’s population, it’s also handy for comparing territories before you split them up.