Woodleaf is an unincorporated community in Yuba County, California. It is located 2.5 miles northeast of Challenge, at an elevation of 3133 feet. A post office operated at Woodleaf from 1898 to 1971, with a closure from 1945 to 1947. Originally named after Charles Barker who settled here in 1850, the name now honors James Wood who bought the property i…Woodleaf is an unincorporated community in Yuba County, California. It is located 2.5 miles northeast of Challenge, at an elevation of 3133 feet. A post office operated at Woodleaf from 1898 to 1971, with a closure from 1945 to 1947. Originally named after Charles Barker who settled here in 1850, the name now honors James Wood who bought the property in 1858.