Below is a list of Honolulu County HI zip codes. For your research we have also included Honolulu County Area Code, Time Zone, UTC and the local County FIPS Code. Each Honolulu County Hawaii zip code has a center Longitude / Latitude point (the Honolulu County center is -157.8869934082 / 21.361299514771). For your convenience we have also indicated if that zip code in Honolulu County observes Daylight Savings time.