There are 8 US Post Offices in Rice County serving a total of 66,433 residents equating to 8,304 residents per post office. It's estimated that approximately 106,034 packages are handled across the 8 county post offices annually. Rice County is a county located in the U.S. state of Minnesota. As of the 2010 census, the population was 64,142. Its county seat is Faribault. Rice County comprises the Faribault-Northfield, MN Micropolitan Statistical Area, which is included in the Minneapolis-St. Paul, MN-WI Combined Statistical Area.