Free tool · map
ZIP codes in a drawn area
Click on the map to draw a delivery zone, sales territory or any other area and get all postal codes inside it.
Click the map to draw an area (at least 3 points).
Polygon search by API
Send the corners of your area as [longitude, latitude] pairs:
curl -X POST "https://api.zipcodestack.com/v1/polygon?country=us" \
-H "apikey: YOUR-API-KEY" -H "Content-Type: application/json" \
-d '{"coordinates": [[-74.02,40.70],[-73.97,40.70],[-73.97,40.76],[-74.02,40.76]]}'
Frequently asked questions
How do I find all ZIP codes in an area?
Choose the country, click on the map to add the corners of your area (at least three points) and click 'Find codes in area'. Every ZIP code whose centre lies inside the shape is listed and can be downloaded as CSV.
Why use a polygon instead of a radius?
Real service areas follow rivers, highways and city limits, not circles. A polygon lets you draw the exact shape.
Postal code API
Get this data in your app
zipcodestack looks up, validates and searches postal codes in 149 countries: city, state, coordinates, distances and radius search, as JSON.
/v1/polygon documentation ZIP code API All documentation
300 free requests every month. No credit card required.
GET https://api.zipcodestack.com/v1/polygon?country=us
{
"results": {
"10001": [{
"postal_code": "10001",
"country_code": "US",
"latitude": 40.7484,
"longitude": -73.9967,
"city": "New York",
"state": "New York",
"state_code": "NY",
"province": "New York"
}]
}
}Free postal code tools
Bulk ZIP code lookup
City and coordinates for a list.
Distance between ZIP codes
Miles or km between ZIP codes.
What is my ZIP code?
Find the ZIP code where you are.
ZIP code radius search
All codes within X miles of a code.
Postal code validator
Is this postal code real?
Postal codes by countryFormats, regions and cities for 149 countries.