How many letters does the top answer for “a city in northwestern mexico near the gulf of california” have?

The most common answer is hermosillo (10 letters).

Crossword clue: a city in northwestern mexico near the gulf of california

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

hermosillo 10 letters wn-def

a city in northwestern Mexico near the Gulf of California