How many letters does the top answer for “occurring or extending throughout a county” have?

The most common answer is countywide (10 letters).

Crossword clue: occurring or extending throughout a county

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

countywide 10 letters wn-def

occurring or extending throughout a county

occurring or extending throughout a city 60% similar → citywide

occurring or extending throughout a state 60% similar → statewide

occurring or extending throughout a country or nation 50% similar → countrywide, nationwide