How many letters does the top answer for “city in oyo state” have?

The most common answer is ibadan (6 letters).

Crossword clue: city in oyo state

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

ibadan 6 letters wd-fact-v3

a large Yoruba city in southwestern Nigeria; site of a university

city in abia state 50% similar → umuahia

city in baroda state 50% similar → vadodara

city in bayelsa state 50% similar → yenegoa

city in bombay state 50% similar → surat

city in cauca state 50% similar → cali

city in delta state 50% similar → asaba, warri

city in edo state 50% similar → benincity

city in ekiti state 50% similar → ikere