CHEurope · Western Europe

Switzerland Address Validation API

Validate and standardise Switzerland addresses in real time. Get a matched address, geocoordinates, confidence score, and Postleitzahl / NPA / NPA data via a single API call.

NNNN
Postleitzahl / NPA / NPA
OpenStreetMap
Data Source
German / French
Languages
HIGH
Max Confidence

Switzerland Address Validation Demo

Confidence:HIGH
POST /enrich — ResponseSample
{
  "_note": "Sample response — enter any address and click Validate for live data",
  "valid": true,
  "canonical_address": "Bundesplatz 3, 3003 Bern",
  "confidence": "HIGH",
  "delivery_risk": "low",
  "matched_address": {
    "line1": "Bundesplatz 3",
    "city": "Bundesplatz",
    "postal_code": "3003 Bern",
    "country": "Switzerland",
    "iso2": "CH"
  },
  "geocode": {
    "lat": 46.9481,
    "lng": 7.4474
  },
  "data_source": "OpenStreetMap",
  "issues": []
}

Switzerland Address Format

Swiss addresses use 4-digit postal codes. The format varies by language region: German-speaking areas follow German convention (street + number, PLZ city), while French and Italian areas follow their respective norms. Addresses appear in the local language.

Postal Code Name
Postleitzahl / NPA / NPA
Format
NNNN
Official Languages
German, French, Italian, Romansh
Sample address:
Bundesplatz 3, 3003 Bern
Major cities:
ZurichGenevaBaselBernLausanneWinterthurLucerne

Integration Code

curl -X POST https://agent.apitier.com/v1/enrich \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"address": "Bundesplatz 3, 3003 Bern"}'

Frequently Asked Questions

What address format does Switzerland use?
Swiss addresses use 4-digit postal codes. The format varies by language region: German-speaking areas follow German convention (street + number, PLZ city), while French and Italian areas follow their respective norms. Addresses appear in the local language.
What is a Postleitzahl / NPA / NPA in Switzerland?
Switzerland uses a Postleitzahl / NPA / NPA with the format NNNN to identify delivery areas. The APITier Address Agent API validates and standardises addresses including the Postleitzahl / NPA / NPA as part of the response.
How do I validate a Switzerland address via API?
Send a POST request to https://agent.apitier.com/v1/enrich with your address string in the request body and your API key in the x-api-key header. The response includes the standardised Switzerland address, geocoordinates (lat/lng), a confidence score (HIGH/MEDIUM/LOW), and data source information.

More Europe Countries

Ready to validate Switzerland addresses at scale?

The APITier Address Agent API handles address validation across 120+ countries. Free trial — 20 requests, no credit card required.