GeoApi vs US ZipCode
Same instrument, two spec sheets — measured, not claimed.
GeoApi vs US ZipCode: common questions
Which is more reliable, GeoApi or US ZipCode?
On our scheduled checks, US ZipCode leads on measured uptime — GeoApi at —% versus US ZipCode at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do GeoApi and US ZipCode need an API key?
GeoApi needs no key, while US ZipCode requires a free API key. If you want to start calling without signup, reach for GeoApi first.
Can I call GeoApi and US ZipCode from the browser?
Yes — both GeoApi and US ZipCode send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are GeoApi and US ZipCode free for commercial use?
GeoApi allows commercial use on its free tier, and US ZipCode has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.