JULIO 204 was a Puerto Rican resident of Inwood who wrote graffiti in his youth.

[3] Julio lived on 204th Street in the Inwood neighborhood of Upper Manhattan, and was a member of the Savage Skulls.

In 1971 the New York Times published an article about another graffiti writer with a similar style of including their street number in their tag, Taki 183.

[4] According to the article Julio had been writing for a couple of years when Taki began tagging his own name all around the city.

Julio 204 kept his tags localized to his own neighborhood, and never rose to the height of fame as Taki, who was the first to go "All City".