How many letters does the top answer for “capital of saint lucia” have?

The most common answer is castries (8 letters).

Crossword clue: capital of saint lucia

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

castries 8 letters wd-fact

a port on the island of Saint Lucia; capital and largest city of Saint Lucia

a person from saint lucia 50% similar → saintlucian

city in saint lucia 50% similar → castries

island in saint lucia 50% similar → saintlucia

mountain in saint lucia 50% similar → grospiton, pitons, qualibou