Loading ZIP outlines…
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 is a free, interactive map of all 41,063 U.S. ZIP codes, with each ZIP code’s boundary, county lines, city names and streets. Zoom in anywhere in the 50 states, Washington, DC or Puerto Rico to see the outlines and numbers, point at a ZIP code to see its city, county and population, and click ZIP codes to build a list you can export.
The map above opens on the whole country. Type a ZIP code, city or county in the search box to jump there, or zoom in with the + button, the scroll wheel or two fingers.
The U.S. Postal Service does not publish ZIP code boundaries: a ZIP code is a set of delivery routes, not an area. The outlines on this map are the Census Bureau’s 2020 ZIP Code Tabulation Areas (ZCTAs), built from census blocks to match where each ZIP code’s addresses are. They follow ZIP codes closely but are not official USPS borders, and a few addresses near an edge may use the ZIP code next door.
33,791 ZIP codes have an outline. The other 7,272 have none, because they serve PO boxes or a single organization (a company, university or government office) rather than an area; they appear as dots at their post office or address. Counties are drawn in violet and city names in blue, so they stand apart from the grey ZIP lines.
The number of ZIP codes on the map in each state, including PO Box and single-organization ZIP codes. Texas has the most (2,599), then California (2,588), Pennsylvania (2,169) and New York (2,151); Rhode Island has the fewest (90).
Outlines: 2020 Census ZIP Code Tabulation Areas. ZIP types, city names and dot locations: the zipcodes package (version 3.0.0), from the USPS ZIP list and GeoNames. Population: 2020 Census counts by ZCTA. Counties: 2020 Census county boundaries. Streets: OpenStreetMap contributors, through the Protomaps basemap.
There are no official ones: USPS defines ZIP codes as delivery routes and does not publish boundaries. The map uses the Census Bureau’s ZIP Code Tabulation Areas, the standard public outlines for ZIP codes, which match them closely but not address by address.
PO Box and single-organization ZIP codes cover no area of their own, so the Census has no outline for them. They appear as dots and can be selected like any other ZIP code.
The outlines are from the 2020 Census, the ZIP list and types from the zipcodes package 3.0.0, and the map data was last rebuilt on October 26, 2026. New ZIP codes created since 2020 may appear only as dots.
Yes. Save map image in the list panel downloads a PNG of the map as it is on screen, with your ZIP codes highlighted. Zoom and frame it first.
Yes. There is no sign-up, no ads and no limit on use. Your selections stay in your browser.
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