How many letters does the top answer for “city in saint helena” have?

The most common answer is jamestown (9 letters).

Crossword clue: city in saint helena

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

jamestown 9 letters wd-fact-v3

a former village on the James River in Virginia to the north of Norfolk; site of the first permanent English settlement

city in saint-louis 50% similar → dagana

city in saint lucia 50% similar → castries

city in saint michael 50% similar → bridgetown