Gueydan, LA is a city located in Vermilion County, Louisiana and has a land area of 190.88 square miles (494.38 km2). The water area for the city is 8.08 square miles or 20.93 km2. There is one unique zip code in Gueydan, Louisiana and it is 70542. The area code(s) for Gueydan is 337.
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