US ZipCode
US ZipCode — free tier with API key
US ZipCode exposes a free-tier JSON API. Register for an API key if required; we verified a public or demo endpoint.
GET https://us-zipcode.api.smarty.com/lookup?\n\tauth-id=YOUR+AUTH-ID+HERE\u0026amp;\n\tauth-token=YOUR+AUTH-TOKEN+HERE\u0026amp;\n\tcity=mountain+view\u0026amp;\n\tstate=CA\u0026amp;\n\tzipcode=94035
{
"errors": [
{
"id": 1611079217,
"message": "Authentication required (1611079217)"
}
]
}curl "https://us-zipcode.api.smarty.com/lookup?\n\tauth-id=YOUR+AUTH-ID+HERE\u0026amp;\n\tauth-token=YOUR+AUTH-TOKEN+HERE\u0026amp;\n\tcity=mountain+view\u0026amp;\n\tstate=CA\u0026amp;\n\tzipcode=94035"const res = await fetch("https://us-zipcode.api.smarty.com/lookup?\n\tauth-id=YOUR+AUTH-ID+HERE\u0026amp;\n\tauth-token=YOUR+AUTH-TOKEN+HERE\u0026amp;\n\tcity=mountain+view\u0026amp;\n\tstate=CA\u0026amp;\n\tzipcode=94035");
const data = await res.json();
console.log(data);import requests
res = requests.get("https://us-zipcode.api.smarty.com/lookup?\n\tauth-id=YOUR+AUTH-ID+HERE\u0026amp;\n\tauth-token=YOUR+AUTH-TOKEN+HERE\u0026amp;\n\tcity=mountain+view\u0026amp;\n\tstate=CA\u0026amp;\n\tzipcode=94035")
print(res.json())THIS API IS DEAD — NOTHING TO RUN
/lookup?\n\tauth-id=YOUR+AUTH-ID+HERE\u0026amp;\n\tauth-token=YOUR+AUTH-TOKEN+HERE\u0026amp;\n\tcity=mountain+view\u0026amp;\n\tstate=CA\u0026amp;\n\tzipcode=94035PROBEDUS ZipCode — free tier with API key
/lookup?limit=5Lookup — documented GET route.
/lookup?page=1Lookup — documented GET route.
We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.
Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.
US ZipCode: common questions
Is US ZipCode free to use?
Yes — US ZipCode is a free geo & maps API. Free tier: Free tier — API key required. Whether the free tier allows commercial use is unclear — check the provider docs.
Does US ZipCode need an API key?
Yes — US ZipCode needs a free API key, which you pass on each request. Rate limits: Unpublished.
Can I call US ZipCode from the browser?
Yes — US ZipCode returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.
Is US ZipCode up right now?
As of our last scheduled check, US ZipCode is dead. We re-probe it every sweep — the status badge and uptime chart above always show the latest.