Below is a list of Midwest WY zip codes. For your research we have also included Midwest Area Code, Time Zone, UTC and the local Natrona County FIPS Code. Each Midwest Wyoming zip code has a center Longitude / Latitude point (the Midwest center is -106.27300262451 / 43.41429901123). For your convenience we have also indicated if that zip code in Midwest observes Daylight Savings time.