What was the address of the Ricardos' apartment in New York City?

The Ricardos’ apartment in New York City was at 623 East 68th Street.

The address belonged to the fictional Manhattan apartment building where Lucy and Ricky Ricardo lived with their landlords and friends, Fred and Ethel Mertz. The Ricardos initially occupied apartment 4A, later moving to a larger apartment identified as 3B and eventually 3D.

The address is often treated as a real New York location, but it was invented for the series. In reality, East 68th Street ends at the East River before reaching house number 623, meaning the fictional building would be in the water. That geographic joke is a popular piece of I Love Lucy trivia.

The Ricardos eventually left Manhattan for Westport, Connecticut, during the sixth season. The move changed the show’s setting from a compact city apartment to a suburban home, but the East 68th Street apartment remains the series’ most recognizable residence.