Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
countywide is an adjective meaning "occurring or extending throughout a county". It carries one recorded sense.
occurring or extending throughout a county
“a countywide war on drugs”
“countywide elections”
Definitions, synonyms and semantic relations for countywide come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.