American dog tick distribution map of United States
ADT_distribution_map
Distribution: In the US, the American dog tick ranges from the coastal Atlantic states south and westward to the Panhandle and Trans-Pecos regions of Texas, and northward to eastern and south-central Montana. Along the Pacific coast, this tick is present through the western half of California and may be found northward into areas of Oregon and Washington. This tick is also reported in parts of Canada and Mexico.