If you received this number on a shipping notice, "153087" likely refers to a processing center code or tracking number rather than a standard 5-digit postal code.

If this is a tracking number from a "piece depositada" (deposited piece), it may be in international transit. To help you better, could you clarify:

However, the number looks similar to tracking updates involving entering Mexico, specifically those processed through the Mexico City (CDMX) mail system before customs, which often start with digits like 15 or 07 for international/airmail, and are then assigned a 5-digit code.

In Mexico, postal codes (CP) are , with the first two digits identifying the state or region.

Visit the Correos de México official portal to verify the postal code.