Postal Code 3730-109 - Viadal, Aveiro, Portugal
Postal Code: 3730-109
Postal System Details
Postal Authority
CTT – Correios de Portugal
Postal System
Seven-digit postal code (4 digits + 3 digits: 1234-567)
Region Structure
District → Municipality → Parish → Delivery Zone
Area Information
The postal code 3730-109 follows Portugal’s seven-digit postal addressing system, overseen by CTT – Correios de Portugal, the national postal authority of Portugal. Portuguese postal codes follow the format X X X X–X X X, such as 1 0 0 0–0 0 X (illustrative only). The first four digits define the municipality and parish grouping, while the last three digits specify localized delivery sectors. This postal code corresponds to Viadal in the Aveiro district/municipality, located near coordinates 40.8586 and -8.3372. Routing follows District → Municipality → Parish → Delivery Zone. Example mapping: - District/Municipality: Aveiro - Parish: (Example: Central Parish Area) - Locality: Viadal - Delivery Sector: Based on last three digits This page reflects routing principles followed by CTT. All examples shown are illustrative only. To ensure precise delivery, verify that the parish and municipality correspond with Viadal, Aveiro, Portugal.
Country:
Portugal
State:
Aveiro
Area:
Viadal
Postal Code:
3730-109
Latitude:
40.8586
Longitude:
-8.3372
Frequently Asked Questions
1. What area does 3730-109 represent in Portugal?
It designates the parish-level delivery zone serving Viadal within the Aveiro district/municipality.
2. How do Portuguese postal codes work?
They use the format 1234-567, where the first digits define municipality/parish routing.
3. Can 3730-109 verify an address in Portugal?
Yes—if municipality and parish match Viadal, Aveiro.
4. Which authority manages postal codes in Portugal?
CTT – Correios de Portugal manages national postal routing and code assignments.