Topock is a small unincorporated community and census-designated place (CDP) in Mohave County, Arizona, United States. As of the 2020 census, the population within the CDP was 2. Topock and the surrounding region have a ZIP Code of 86436; in 2010, the population of the 86436 ZCTA was 2,104, almost all of whom live in the Golden Shores CDP to the north.

Mohave County is in the northwestern corner of the U.S. state of Arizona. As of the 2020 census, its population was 213,267. The county seat is Kingman, and the largest city is Lake Havasu City. It is the fifth largest county in the United States.