Walnut Creek, ArizonaWalnut Creek is an unincorporated community and census-designated place in Mohave County, in the U.S. state of Arizona. The population was 571 at the 2020 census.GeographyWalnut Creek is in central Mohave County, southwest of Kingman, the county seat. Interstate 40 passes to the east of the community, with access from Exit 44. County Route 10 is the main road through the CDP.EducationThe CDP is in the Kingman Unified School District.