Below is a list of Hennessey OK zip codes. For your research we have also included Hennessey Area Code, Time Zone, UTC and the local Kingfisher County FIPS Code. Each Hennessey Oklahoma zip code has a center Longitude / Latitude point (the Hennessey center is -97.899002075195 / 36.105201721191). For your convenience we have also indicated if that zip code in Hennessey observes Daylight Savings time.