Urban areas are regions characterized by high population density and infrastructure development, such as buildings, roads, and utilities. Research in urban areas focuses on the planning, management, and sustainability of these densely populated regions. This includes studying issues such as urban growth, transportation systems, housing, environmental quality, social services, and economic development. Researchers in this area may use a variety of methods, including data analysis, modeling, and fieldwork, to understand the complex dynamics of urban areas and to develop strategies for creating more livable, efficient, and equitable cities.