Like any large city, Singapore has faced a growing population, and with it the high demand for housing. In 1960, the housing Development Board (HDB) was founded. Within a decade, 50,000 new homes were built. Urban planning is now under the control of the Urban Redevelopment Authority (URA). Because there are about 7,300 people per square kilometer, about 85%of the population is now living in high-rise public housing units. These are referred to as housing estate towns and are divided into neighborhood of about 24,000 people. Each neighborhood has schools, clinics, and many other businesses.