Homelessness in the United States has occurred to varying degrees across the country. The total number of homeless people in the United States fluctuates and constantly changes hence a comprehensive figure encompassing the entire nation is not issued since counts from independent shelter providers and statistics managed by the United States Department of Housing and Urban Development vary greatly. Federal HUD counts hover annually at around 500,000 people. Point-in-time counts are also vague measures of homeless populations and are not a precise and definitive indicator for the total number of cases, which may differ in both directions up or down. The most recent figure for the year 2019 that was given was at 567,715 individuals across the country that have experienced homelessness at a point in time during this period.

Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States, with 9,861,224 residents estimated in 2022. Its population is greater than that of 40 individual U.S. states. Comprising 88 incorporated cities and many unincorporated areas within a total area of 4,083 square miles (10,570 km2), it is home to more than a quarter of Californians and is one of the most ethnically diverse U.S. counties. The county's seat, Los Angeles, is the second most populous city in the United States and the most populous city in California, with 3,822,238 residents estimated in 2022. It is also known for being the home of the American film and television industry, a distinction it has held since the early 20th century which has given the county global prominence.