Below is a list of River Hills WI zip codes. For your research we have also included River Hills Area Code, Time Zone, UTC and the local Milwaukee County FIPS Code. Each River Hills Wisconsin zip code has a center Longitude / Latitude point (the River Hills center is -87.911201477051 / 43.150100708008). For your convenience we have also indicated if that zip code in River Hills observes Daylight Savings time.