Purpose - This research aims to examine the wildfire vulnerability of part-time and full-time residents in the wildland-urban interface (WUI) of Teton County, Wyoming. Are part-time residents creating more of a vulnerability to the community because they do not live in the community all year, they have limited experience with wildfires, and they perceive Firewise activities as not being effective mitigation practices?Design methodology approach - Data collection took place via a survey that inquired about respondents past wildfire experiences, if they do Firewise activities, and how effective they feel these wildfire home protection activities are. Responses were analyzed by Chi-squared and t-tests where appropriate.Findings - The results of this study indicate that part-time residents have the same past wildfire experiences and perceptions of Firewise activities, and do similar Firewise activities as full-time residents. This suggests that these communities in Teton County may be more homogenous in their vulnerability than other wildfire communities.Research limitations implications - Because of the limited geographic scope, results cannot be generalized for the entire county, the state of Wyoming, or other wildfire-prone residential areas. Therefore, researchers are encouraged to investigate other WUI areas.Practical implications - This research suggests that local and federal agencies in and near these communities talk to the residents of wildland-interface communities and help them become less vulnerable to the wildfire hazard.Originality value - This research adds to the limited know of wildfire-urban interface vulnerability and perceptions. It is significant because this interface will expand as amenity migration into these natural areas continues to occur.