What ZIP code am I in?
Your ZIP code is one click away: press the button and let your browser share your location.
The red pin is the spot being looked up, from your browser or your click; the shaded area is the ZIP code it falls inside. Click anywhere on the map to look up that spot instead.
ZIP codes around you
| ZIP code | Town | County | To its centre |
|---|
No location? Find your ZIP code another way
Type your street address, or just your town, and the search finds its ZIP code:
· ZIP code for a street address · ZIP code map of the US
How it works
A ZIP code is a set of mail delivery routes, not a shape, so "which ZIP code am I in" is answered with the closest official shape there is: the Census Bureau's ZIP Code Tabulation Areas, drawn from the addresses on each route. This page asks your browser for your location, finds the ZIP code areas nearest it, then checks which boundary the point is inside, the same boundaries drawn on every map on this site.
On a phone with location turned on, the answer is usually exact. On a laptop or desktop the browser guesses from Wi-Fi networks or your internet connection, which can be off by a mile or more; when it is, the page says so and lists the neighbouring ZIP codes. About 7,900 ZIP codes are PO boxes, single buildings or military mail with no area at all, so they never come up here.
Questions
How does this find my ZIP code?
Your browser tells the page where you are, from GPS on a phone or from nearby Wi-Fi networks on a laptop. The page looks up the ZIP code areas around that point, then checks which ZIP code boundary the point is inside. The boundaries are the Census Bureau's 2020 ZIP Code Tabulation Areas.
Why does it show a different ZIP code from the one on my mail?
Three usual reasons. A computer without GPS can place you a mile or more away, which the page tells you when it happens. Near a boundary, the ZIP code across the street can be the right one. And some addresses use a PO box or a ZIP code for a single building, which has no area on a map; your street's ZIP code is still the one shown.
Do you store my location?
No. Your coordinates are sent once, inside the request, to look up the nearest ZIP codes, and they are neither logged nor kept. The background map comes from OpenFreeMap, whose servers see which map squares your browser loads, as with any online map.
What is my ZIP+4 code?
The four extra digits identify a block, a building or a floor, so they need a full street address, not a location. The Postal Service's free ZIP Code lookup gives the ZIP+4 for an address.
Does it work outside the United States?
It covers the 50 states, Washington DC, Puerto Rico, Guam, the US Virgin Islands, the Northern Mariana Islands and American Samoa. Anywhere else, it says that no ZIP code area is nearby.