Below is a list of Pasco WA zip codes. For your research we have also included Pasco Area Code, Time Zone, UTC and the local Franklin County FIPS Code. Each Pasco Washington zip code has a center Longitude / Latitude point (the Pasco center is -119.095 / 46.2861). For your convenience we have also indicated if that zip code in Pasco observes Daylight Savings time. For more information on Pasco Washington you will find helpful business links and searches.