Onancock, VA is a city located in Accomack County, Virginia and has a land area of 47.32 square miles (122.56 km2). The water area for the city is 17.01 square miles or 44.06 km2. There is one unique zip code in Onancock, Virginia and it is 23417. The area code(s) for Onancock is 757.
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