The population of Guinea-Bissau in 2003 was estimated by the United Nations at 493,000, which placed it as number 160 in population among the 193 nations of the world. In that year approximately 4% of the population was over 65 years of age, with another 44% of the population under 15 years of age. There were 97 males for every 100 females in the country in 2003. According to the UN, the annual population growth rate for 2000–2005 is 2.95%, with the projected population for the year 2015 at 2,104,000. The population density in 2002 was 35 per sq km (90 per sq mi).
It was estimated by the Population Reference Bureau that 24% of the population lived in urban areas in 2001. The majority of the population lives in small farming communities or fishing towns. The capital city, Bissau, had a population of 274,000 in that year. According to the United Nations, the urban population growth rate for 2000–2005 was 4.0%.