El código postal completa la dirección postal.

The postal code completes the postal address.

Breakdown of El código postal completa la dirección postal.

• completar: to complete
• la dirección postal: the postal address
• el código postal: the postal code; zip code

Questions & Answers about El código postal completa la dirección postal.

Why does the sentence start with El?

Because código is a masculine singular noun in Spanish, so it takes the masculine singular definite article el.

• el código postal = the postal code / zip code
• la dirección postal = the mailing address

The article has to match the noun in gender and number:

• el código
• los códigos

Why is it la dirección but el código?

Spanish nouns have grammatical gender. Here:

• código is masculine → el código
• dirección is feminine → la dirección

There is no special meaning difference here; it is just part of how each noun works in Spanish, and the article must agree with it.

What exactly is código postal?

Código postal is the standard Spanish term for postal code in Latin America. In many contexts, an English speaker may think of it as zip code, although ZIP code is specifically the U.S. term.

So:

• código postal = postal code / zip code

In Latin America, this is the normal formal expression.

Why is postal after the noun instead of before it?