Below is a list of Howe TX zip codes. For your research we have also included Howe Area Code, Time Zone, UTC and the local Grayson County FIPS Code. Each Howe Texas zip code has a center Longitude / Latitude point (the Howe center is -96.61669921875 / 33.513301849365). For your convenience we have also indicated if that zip code in Howe observes Daylight Savings time.