How to Say "the thirties" in Spanish
The Spanish word for “the thirties” is “treinta” — A2 level.
English → SpanishA2
NounA2
decade or age range (often used in plural: 'los treinta')

Examples
El treinta es un número par.
Thirty is an even number.
Ella está en sus treinta y se siente genial.
She is in her thirties and feels great.
Necesito el autobús treinta para ir al centro.
I need the number thirty bus to go downtown.
Referring to Age
When talking about someone's age range (the decade of life), Spanish uses the masculine plural form with the article: 'los treinta' (the thirties).
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.