What ZIP code am I in?

Press Find me and the map shows the ZIP code you are in. In the US it comes with the ZIP codes next to it, their cities, populations and time zone; elsewhere, the postal code the geocoder knows.

How to use it

  1. Press Find me and allow the browser to use your location.
  2. Read the ZIP code in the first card. In the US the table lists the ZIP codes around you with their cities and populations.
  3. Type an address, click the map, or drag the pin to check another point.

5 practical uses

  1. Fill in a form that needs the ZIP code of where you are standing.
  2. Check the ZIP code of a new house, an office or a building site.
  3. Find the ZIP codes around you for a delivery zone or a local search.
  4. See which ZIP codes are close when a service is offered by ZIP code.
  5. Get the postal code abroad for a customs declaration or an online order.

The maths behind it

The ZIP code comes from the address at the point. The table takes the great-circle distance from the point to the centre of every ZIP code (the haversine formula on a sphere of radius 6,371 km) and keeps the nearest.

How accurate it is

A phone with GPS is accurate to a few metres outdoors; a laptop on Wi-Fi is often within a hundred metres, and a wired desktop may be placed at the nearest exchange, a town away. Near a boundary, drag the pin to check. ZIP codes are delivery routes, not areas, so a ZIP code can be found on both sides of a street. The postal code from the address is the one you are in; the table lists ZIP codes by the distance to their centre point.

Privacy

The page never stores your position. The link in the address bar carries the coordinates so you can share or bookmark the result; clear it if you would rather not.

More tools

Where am IWhat country am I in?Find the country you are in from your device location, with its borders on the map. Where am IWhat state am I in?Find the state, province or region you are in, with its outline on the map. Where am IWhat county am I in?Find the county you are in. In the US it comes with the FIPS code, population and ZIP codes. Where am IWhat city am I in?Find the city, town or village you are in, and the nearest larger cities. Measure and routeDrive time mapSee how far you can drive, cycle or walk from a point in 10, 15, 30 or 60 minutes. Map makersRegion painterClick countries or US states to colour them, for a visited map or any other. Map makersGeoJSON viewerOpen a GeoJSON file, or paste it, and see it on the map with its properties. LookupsNearest national parkThe closest of the 63 US national parks to any point, and the ones after it. Waymorphic MapAll 64 toolsWhere am I, measuring, coordinates, map makers, lookups, sun and moon, the lines of the globe.

Questions and answers

Is the ZIP code exact?

The code in the first card comes from the address the geocoder finds at the point, which is usually right. ZIP codes are delivery routes rather than areas, so near a boundary the neighbour in the table can be the right one.

Does it work for postal codes outside the US?

Yes. Outside the US the page shows the postal code the geocoder knows for the address. The table of neighbours is US only.

Why is a ZIP code in the table 0 people?

It is a post-office-box or business ZIP code with no residents, or one the census does not count separately.

Embed this tool on your website

Paste this code where the tool should appear. It shows the tool alone, without this page's text, and links back here. It is free to use; the map data credit stays on the map.

<iframe src="https://waymorphic.com/tools/what-zip-code-am-i-in?embed=1" width="100%" height="760" style="border:0;border-radius:12px;max-width:100%" loading="lazy" allow="geolocation; fullscreen; clipboard-write" title="What ZIP code am I in? – Waymorphic Map"></iframe>

Change height to suit your page. To open the tool with a place already set, add the settings from this page's address bar (the part after #) to the end of the src. The embedded tool asks the visitor's browser for their location only when they press the button, and the allow attribute lets that work inside the frame.