How many letters does the top answer for “home of rockefeller center” have?

The most common answer is manhattan (9 letters).

Crossword clue: home of rockefeller center

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

manhattan 9 letters wd-fact-v3

one of the five boroughs of New York City

home of rockefeller museum 50% similar → jerusalem

home of target center 50% similar → minneapolis

home of united center 50% similar → illinois