Effective wildland fire management increasingly entails fostering shared stewardship of the landscape across ownership boundaries, and enacting collaborative strategies that require management responsibilities distributed among public agencies, local governments and private residents. However, promoting such shared stewardship requires a greater understanding of the interactions between public agencies, local governments, and private residents. In particular, shared stewardship could be enhanced through a better understanding of the contributions that private landowners are willing to make, given their perception of wildfire risk, their experience participating in collaborative land management, and the mitigation actions they have already taken on their land. Prior research found that private residents living at the wildland-urban interface are highly diverse in terms of residency, risk perception and, importantly, their support for regulatory and collective action in the face of wildfire threat. Therefore, understanding which groups of residents are likely to be more supportive of or resistant to such actions is key to developing collaborative strategies. In an effort to address this gap in understanding, researchers surveyed 744 residents of Pend Oreille County, Washington, in August 2018 to better understand the relationships between private landowners’ support of land-use planning regulations, their participation in various wildfire programs, and their perceptions about sources of wildfire risk where they live.