API · /postalcode-api

Postal Code API

healthy 4,532 Subscribers

Resolve postal and ZIP codes to city, state and geo-coordinates for around 60 countries — and the reverse, listing all postal codes of a city. Perfect for checkout and address-form autofill, shipping, store locators and geo-targeting.

api.oanor.com/postalcode-api
Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

/api/postalcode-api/openapi.json
/api/postalcode-api/llms.txt

Discovery: GET /api/index.json lists every API.

Postal Code API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
216 ms
Server probes · 24h
Subscribers
4,532
active
Total calls
38
last 7 days
status Full status page → · 6 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 5,000 calls / month
  • 5 requests / second
  • Hard cap (429 above quota, no overage)
  • 5k calls/month
  • 5 req/sec
  • Lookup + reverse places
  • No credit card
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Basic

€12.00 /month

  • 75,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 75k calls/month
  • 15 req/sec
  • Email support
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Pro

€39.00 /month

  • 400,000 calls / month
  • 30 requests / second
  • Hard cap (429 above quota, no overage)
  • 400k calls/month
  • 30 req/sec
  • Priority support
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Mega

€99.00 /month

  • 1,500,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.5M calls/month
  • 50 req/sec
  • Dedicated SLA
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Built by

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Geo Wikipedia API

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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Postal Code API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Postal Code API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Postal Code API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Postal Code API cost?
Postal Code API has a free tier with 100 calls / month. Paid plans start at €12.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Postal Code API GDPR-compliant?
All requests to Postal Code API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/postalcode-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/postalcode-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/postalcode-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/postalcode-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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