Red swamp crayfish (Procambarus clarkii) are the most widespread invasive crayfish species, largely dispersed through human mediated activities. Given their ability to disrupt aquatic ecosystems and damage human infrastructure through burrowing, identifying areas of increased introduction risk is valuable for early detection and management. To assist managers, we developed a risk assessment model to determine the relative risk of P. clarkii introduction across Michigan, United States. We calculated the relative introduction risk within catchments across the state using presumed introduction vectors and associated habitats. We assessed introduction risk to stream catchments statewide by examining population density, distance to current P. clarkii populations, golf courses, schools and pet shops. We found that suburban Detroit has the highest risk for P. clarkii introduction, and other urban areas like Grand Rapids and Lansing are at moderate risk. By identifying these high-risk areas, managers can conduct targeted surveillance efforts with an aim to detect any future invasions quickly and implement removal strategies at an earlier stage of invasion.