Below is a list of Rainier OR zip codes. For your research we have also included Rainier Area Code, Time Zone, UTC and the local Columbia County FIPS Code. Each Rainier Oregon zip code has a center Longitude / Latitude point (the Rainier center is -122.94599914551 / 46.090301513672). For your convenience we have also indicated if that zip code in Rainier observes Daylight Savings time.