How many letters does the top answer for “nvidia's headquarters are based in which silicon valley city” have?

The most common answer is clara (5 letters).

Crossword clue: nvidia's headquarters are based in which silicon valley city

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

clara 5 letters otdb

santa 5 letters otdb

the legendary patron saint of children; an imaginary being who is thought to bring presents to children at Christmas