Postal Code 81666 – Costa Azul, Sinaloa
Postal code 81666: buildings, sector and reference details.
Postal Information
| Postal Code | 81666 |
|---|---|
| City | Costa Azul |
| Region | Sinaloa |
| Country | Mexico |
Nearby Postal Codes
Distances are calculated geographically from this postal code, not from administrative boundaries.
| Postal Code | City | Region | Coordinates |
|---|---|---|---|
| 81605 | Los Álamos | Sinaloa | 4.9 km |
| 81664 | Independencia | Sinaloa | 8.4 km |
| 81680 | La Reforma | Sinaloa | 8.4 km |
| 81650 | Valentín Gómez Farias | Sinaloa | 8.6 km |
| 81670 | Leopoldo Sanchez Celis | Sinaloa | 10.8 km |
| 81670 | Ignacio Allende | Sinaloa | 10.8 km |
| 81661 | Rafael Buelna | Sinaloa | 11.2 km |
| 81661 | Dámaso Cárdenas | Sinaloa | 11.6 km |
| 81655 | Protomartir de Sinaloa | Sinaloa | 12.9 km |
| 81675 | Sinaloa | Sinaloa | 13.4 km |
| 81639 | Bruno Beltran Garcia | Sinaloa | 14.9 km |
| 81635 | La Providencia | Sinaloa | 18.6 km |
| 81635 | La Ilama | Sinaloa | 18.6 km |
| 81600 | Angostura Centro | Sinaloa | 18.6 km |
| 81605 | Fovissste | Sinaloa | 18.6 km |
| 81607 | Labastida Ochoa | Sinaloa | 18.6 km |
About Postal Code 81666 in Costa Azul, Sinaloa
Postal Code 81666 for Costa Azul, Sinaloa is part of the Mexico postal code system, which uses a numeric code of 5 digits (e.g. 01000). Addresses here are organised as State → Municipality → Locality → Neighborhood / Colonia.
Administratively it is recorded in Sinaloa within Mexico. Postal codes are assigned by delivery route rather than by administrative boundary, so a single code can cover more than one locality and a locality can fall under several codes.
No building-level records are held for this code in the imported dataset, so only the code and its location details are shown. The absence of records does not mean the postal code is unused.
Couriers, e-commerce checkout forms and address autocomplete tools all rely on the postal code to route mail and to check that a stated address matches the code. Because a postal code identifies a delivery area rather than a single building, two addresses that share the same code can still be some distance apart.
Always write Mexico Postal Code in full when completing a form, including any leading zero. Enter a 5-digit Mexican postal code. Data source: a third-party open dataset. This is a reference snapshot, not a live government feed, so confirm the code with the sender, carrier or postal authority before relying on it.