Below is a list of Copan OK zip codes. For your research we have also included Copan Area Code, Time Zone, UTC and the local Washington County FIPS Code. Each Copan Oklahoma zip code has a center Longitude / Latitude point (the Copan center is -95.925796508789 / 36.900398254395). For your convenience we have also indicated if that zip code in Copan observes Daylight Savings time.