This VCO presents work completed by the Team 1 project at the 2023 I-GUIDE Summer School, which analyzed changes in the location and extent of the wildland urban interface (WUI) in the contiguous US (CONUS) from 2000-2020. Using timeseries landcover data and Microsoft’s building footprints in Google Earth Engine, our team applied an accepted methodology to produce a novel timeseries of WUI interface and intermix maps consistently across CONUS. We then analyzed the changing extent of the WUI and characterized wildfire risk and socioeconomic factors using NASA SEDAC’s Social Vulnerability Index and LANDFIRE’s Wildfire Risk to Communities data to evaluate areas at greatest risk to wildfire. This analysis identified states where the WUI is increasing most rapidly and local areas where high social vulnerability and high wildfire risk intersect in the WUI, providing useful information relevant for for emergency planners.