Postal Code 9121 - Aalsum, Friesland, Netherlands
Postal Code: 9121
Postal System Details
Postal Authority
PostNL
Postal System
Four digits + two letters (1234 AB)
Region Structure
Province → Municipality → District → Street-Level Delivery Unit
Area Information
The postal code 9121 is part of the Netherlands’ alphanumeric postal system, administered by PostNL, the national postal authority of Netherlands. Dutch postal codes follow the pattern X X X X A A, such as 1 0 1 1 A B (illustrative only). The digits identify the municipality and district, while the two letters precisely define street-level delivery units. This postal code corresponds to Aalsum in the Friesland province, located near latitude 53.3411 and longitude 6.0049. Routing in the Netherlands follows Province → Municipality → District → Street-Level Unit. Example mapping: - Province: Friesland - Municipality: (Example: Central Municipal Area) - District: Aalsum - Delivery Unit: Based on final letter pair This page reflects postal routing methodologies used by PostNL. All pattern examples are illustrative only. For accurate delivery, ensure district and municipal alignment with Aalsum, Friesland, Netherlands.
Country:
Netherlands
State:
Friesland
Area:
Aalsum
Postal Code:
9121
Latitude:
53.3411
Longitude:
6.0049
Frequently Asked Questions
1. What area does 9121 represent in the Netherlands?
It indicates the street-level delivery unit assigned to Aalsum within the Friesland province.
2. How does the Dutch postal code system work?
It uses the format 1234 AB, combining district digits with letter-based delivery units.
3. Can 9121 be used for address verification?
Yes—if district and municipality match Aalsum, Friesland.
4. Which authority manages postal codes in the Netherlands?
PostNL manages all postal routing and code assignments nationwide.