Portland Urban Growth Boundary

The Portland Urban Growth Boundary (UGB) is a designated line surrounding the city of Portland, Oregon, that limits where urban development can expand. Its purpose is to control urban sprawl, preserve farmland and natural areas, and encourage responsible development within the boundary. By focusing growth inside the UGB, Portland aims to promote efficient land use, protect environmental resources, and support community infrastructure. The boundary can be revised over time through planning processes, balancing city expansion with environmental and quality-of-life considerations.