Netherlands Postal Code API

About Netherlands postcodes

The Netherlands uses 6-character postcodes in NNNN AA format. The 4-digit prefix identifies the area; the 2-letter suffix narrows to a street section.

Local term: postcode | Regex pattern: ^\d{4}\s?[A-Z]{2}$

API Usage Examples

curl -X POST https://postaldatapi.com/api/lookup \
  -H "Content-Type: application/json" \
  -d '{"zipcode": "1011 AB", "country": "NL", "apiKey": "YOUR_API_KEY"}'

from postaldatapi import PostalDataPI

client = PostalDataPI(api_key="YOUR_API_KEY")
result = client.lookup("1011 AB", country="NL")
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('1011 AB', { country: 'NL' });
console.log(result.placeName, result.latitude, result.longitude);