Below is a list of Smithfield RI zip codes. For your research we have also included Smithfield Area Code, Time Zone, UTC and the local Providence County FIPS Code. Each Smithfield Rhode Island zip code has a center Longitude / Latitude point (the Smithfield center is -71.549598693848 / 41.92200088501). For your convenience we have also indicated if that zip code in Smithfield observes Daylight Savings time.