The State of Homelessness in America report consists of four major sections. Chapter 1 chronicles annual changes in overall homelessness and homelessness among families and other subpopulations. Chapter 2 demonstrates how economic risk factors, including unemployment, have increased during the recent economic recession. Chapter 3 identifies some specific populations, including doubled-up people and youth aging out of foster care, that are at increased risk of homelessness and documents trends in the sizes of those populations. Chapter 4 identifies a series of states, including California, Florida, and Nevada, that face multiple risk factors for worsening homelessness.