There were about 5.1 million in 2023, of which around 13% were unoccupied and available to rent. Federally subsidized rental housing began with 1937’s US Housing Act, which created the United States Housing Authority and provided financial assistance to state and local governments for housing low-income people. Since then, the government has provided housing assistance to low-income renters through programs overseen by the US Department of Housing and Urban Development (HUD).
