This document summarizes data on four major disasters between 1923-2005 in terms of deaths, economic costs, and whether they primarily impacted urban or rural areas. The 1923 Tokyo Earthquake caused 105,000 deaths and $1 billion in damage in a highly populated urban area. The 1995 Kobe Earthquake led to 6,800 deaths and $100 billion in costs in another highly populated urban center. The 2004 Indian Ocean Tsunami killed 130,000 people in India alone and cost $4.5 billion, primarily impacting rural coastal villages. Hurricane Katrina in 2005 resulted in 1,800 deaths and $150 billion in losses, affecting both urban and mixed areas in New Orleans.