The population of Dominican Republic in 2003 was estimated by the United Nations at 8,745,000, which placed it as number 85 in population among the 193 nations of the world. In that year approximately 5% of the population was over 65 years of age, with another 35% of the population under 15 years of age. There were 103 males for every 100 females in the country in 2003. According to the UN, the annual population growth rate for 2000–2005 is 1.49%, with the projected population for the year 2015 at 10,121,000. The population density in 2002 was 180 per sq km (467 per sq mi). The southern coastal plains and the Cibao Valley are the most densely populated areas of the country.
It was estimated by the Population Reference Bureau that 65% of the population lived in urban areas in 2001. The capital city, Santo Domingo, had a population of 3,523,000 in that year. Other important cities are Santiago de los Caballeros, La Romana, San Pedro de Macorís, San Francisco de Macorís, and Concepción de la Vega. According to the United Nations, the urban population growth rate for 2000–2005 was 2.3%.