Postcode 4303
Location: Kanton Aargau → Bezirk Rheinfelden → Kaiseraugst
2 location(s) using this postal code in Switzerland
Districts with postcode 4303
About Postcode 4303
This postal code is assigned to Kaiseraugst Municipality District Bezirk Rheinfelden, Kanton Aargau, Switzerland. This location-level postal code helps ensure accurate mail delivery and location identification.
Postal Code Format
Switzerland uses numeric postal codes with 4 digits (example: 8001). In our directory, these codes are organized from cantons down to municipalities.
- 43 — Canton (Kanton Aargau)
- 03 — District (Bezirk Rheinfelden)
- — Municipality (Kaiseraugst)
How to Use This Postcode 4303
When sending mail or packages to this area, use the postal code below to ensure accurate and timely delivery.
Address format example:
Recipient Name
House #, Street Name
Kaiseraugst
Bezirk Rheinfelden, Kanton Aargau
4303
Switzerland
Domestic Mail
Include this postcode on all letters and packages sent within Switzerland.
International Mail
For international deliveries, include "Switzerland" on the last address line after the postcode.
Frequently Asked Questions
What area does this postcode cover?
This postcode covers Kanton Aargau → Bezirk Rheinfelden → Kaiseraugst in Switzerland.
Is this a valid List Post Code?
Yes. 4303 is an active postcode for Kanton Aargau → Bezirk Rheinfelden → Kaiseraugst in Switzerland. It follows the 4-character format used in this country.
How do I find the postal code for a specific address?
Search by canton, district, and municipality to find the correct postcode in Switzerland. Search Postcodes
Found incorrect info for 4303?
Useful Resources
Developer API
Get this data via API
Free JSON for postcode 4303.
https://api.listpostcode.com/v1/countries/CH/postcodes/4303curl -H "x-api-key: YOUR_API_KEY" \
"https://api.listpostcode.com/v1/countries/CH/postcodes/4303"Requests need a free API key.