Finland Postal Code API

About Finland postinumeros

Finland uses 5-digit postal codes. Helsinki codes start with 00, Turku with 20, Tampere with 33.

Local term: postinumero | Regex pattern: ^\d{5}$

API Usage Examples

curl -X POST https://postaldatapi.com/api/lookup \
  -H "Content-Type: application/json" \
  -d '{"zipcode": "00100", "country": "FI", "apiKey": "YOUR_API_KEY"}'

from postaldatapi import PostalDataPI

client = PostalDataPI(api_key="YOUR_API_KEY")
result = client.lookup("00100", country="FI")
print(result.place_name, result.latitude, result.longitude)

import { PostalDataPI } from 'postaldatapi';

const client = new PostalDataPI({ apiKey: 'YOUR_API_KEY' });
const result = await client.lookup('00100', { country: 'FI' });
console.log(result.placeName, result.latitude, result.longitude);