How many letters does the top answer for “city in gyeonggi province” have?

The most common answer is ansan (5 letters).

Crossword clue: city in gyeonggi province

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

ansan 5 letters wd-fact-v3

anyang 6 letters wd-fact-v3

city in adana province 50% similar → ceyhan, kozan

city in antalya province 50% similar → perge

city in ararat province 50% similar → dvin

city in arauco province 50% similar → canete, curanilahue

city in arkhangai province 50% similar → tsetserleg

city in artemisa province 50% similar → alquizar, bahiahonda, bauta

city in badakhshan province 50% similar → fayzabad

city in balkan province 50% similar → balkanabat