The definition of a "fixed residence" is one that is stationary, permanent and not subject to change.
The term "homeless children and youth" means individuals who lack fixed, regular, and adequate nighttime residence and includes,
Children and youth who share the housing of other persons due to the loss of housing, economic hardship or similar reason (sometimes referred to as "doubled-up")
Children and youth who have a primary nighttime residence that is a public or private place not designed for or ordinarily used a a regular sleeping accommodation for people.
Children and youth who are living in cars, parks, public spaces, abandoned buildings, substandard housing, bus or train stations or similar settings.
Children and youth from migratory populations living in these same situations
National Child Traumatic Stress Network, The Bassuk Center on Homeless and Vulnerable Children and Youth, U.S. Department of Education, National Center on Family Homelessness, and The McKinney-Vento Act