FREE TOOL
ZIP code radius finder
Enter a ZIP and a radius. Get up to 100 ZIP codes with city, state, and distance, nearest first.
Radius
Up to 100 ZIP codes, nearest first. Straight-line distance between ZIP centers.
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.
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 the countries listed on /postal where coordinates are available. 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.