Gold River is a census-designated place in Sacramento County, California. The population was 7,812 at the 2010 census, down from 8,023 at the 2000 census. Gold River is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. With a median family income of $141,399 according to U.S Census Bureau in 2021, Gold …Gold River is a census-designated place in Sacramento County, California. The population was 7,812 at the 2010 census, down from 8,023 at the 2000 census. Gold River is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. With a median family income of $141,399 according to U.S Census Bureau in 2021, Gold River is the highest-income place in Sacramento County.