Postal Code 4540-171 - Calçadas, Aveiro, Portugal
Postal Code: 4540-171
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 4540-171 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 Calçadas in the Aveiro district/municipality, located near coordinates 40.9306 and -8.2449. Routing follows District → Municipality → Parish → Delivery Zone. Example mapping: - District/Municipality: Aveiro - Parish: (Example: Central Parish Area) - Locality: Calçadas - 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 Calçadas, Aveiro, Portugal.
Country:
Portugal
State:
Aveiro
Area:
Calçadas
Postal Code:
4540-171
Latitude:
40.9306
Longitude:
-8.2449
Frequently Asked Questions
1. What area does 4540-171 represent in Portugal?
It designates the parish-level delivery zone serving Calçadas 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 4540-171 verify an address in Portugal?
Yes—if municipality and parish match Calçadas, Aveiro.
4. Which authority manages postal codes in Portugal?
CTT – Correios de Portugal manages national postal routing and code assignments.