Urban growth boundaries (UGBs) are land use planning tools commonly employed by local governments to control sprawl and manage growth within urban areas. These boundaries define the maximum extent to which urban development can occur, beyond which development is restricted or prohibited. UGBs are intended to channel growth into designated areas, protect natural resources and agricultural land, and promote sustainable urban development. UGBs are typically implemented through zoning regulations, land use planning policies, and other tools to control the expansion of cities and towns. By concentrating development within a defined boundary, UGBs aim to minimize the negative impacts of urban sprawl, such as traffic congestion, loss of agricultural land, and increased infrastructure costs. UGBs are often accompanied by policies to encourage compact, mixed-use development, promote public transit, and preserve open space. Overall, urban growth boundaries play a crucial role in shaping the growth and development of cities and regions, and are an important tool in sustainable urban planning.