The research area of US states focuses on studying and analyzing the characteristics, policies, and dynamics of the individual states within the United States. This research area looks at various aspects such as state economies, demographics, political institutions, social welfare programs, healthcare systems, education policies, environmental regulations, and cultural norms that differ among the 50 states. Researchers in this area often examine how state-level policies and decisions impact economic development, social welfare outcomes, political representation, and overall quality of life for residents within each state. This research area helps provide insights into the diverse and multifaceted nature of governance and policymaking in the United States.