Below is a list of Herculaneum MO zip codes. For your research we have also included Herculaneum Area Code, Time Zone, UTC and the local Jefferson County FIPS Code. Each Herculaneum Missouri zip code has a center Longitude / Latitude point (the Herculaneum center is -90.391700744629 / 38.259799957275). For your convenience we have also indicated if that zip code in Herculaneum observes Daylight Savings time.