FREE TOOL

ZIP codes within a radius

Enter a ZIP and a radius. Every ZIP code inside comes back with its city, state, and distance, nearest first.

Radius

Free, no signup. Copy the list or download a CSV.

THE API UNDERNEATH

GET /postal/33139/nearby?country=US&radius=25&unit=mi

This page is that call, running from your browser. The same endpoint ships on every plan, one pooled request per lookup, nine countries.

ZIP code APIDistance between ZIP codesBulk ZIP code lookup

QUESTIONS

How far can the radius go?
Up to 500 miles. Results come back nearest first, up to 100 ZIP codes.
Is the distance driving distance?
No. Straight line between ZIP centroids. Right for radius cuts and service areas, not for turn-by-turn routes.
Can I do this from code?
Yes. This page is GET /postal/{code}/nearby, running from your browser. Same endpoint on every plan, one pooled request per call.
What about postal codes outside the US?
The API covers nine countries. This tool speaks ZIP, and the endpoint takes a country parameter for the rest.
I have a whole file of ZIPs.
Drop it on /bulk/zip. City, state, coordinates, and timezone land on every row.