Below is a list of Riverside PA zip codes. For your research we have also included Riverside Area Code, Time Zone, UTC and the local Northumberland County FIPS Code. Each Riverside Pennsylvania zip code has a center Longitude / Latitude point (the Riverside center is -76.638496398926 / 40.954700469971). For your convenience we have also indicated if that zip code in Riverside observes Daylight Savings time.