Below is a list of Haslett MI zip codes. For your research we have also included Haslett Area Code, Time Zone, UTC and the local Ingham County FIPS Code. Each Haslett Michigan zip code has a center Longitude / Latitude point (the Haslett center is -84.375 / 42.755401611328). For your convenience we have also indicated if that zip code in Haslett observes Daylight Savings time.