38th 2.11% (2017 est.) Mother's mean age at first birth 19.8 years (2011/12 est.) note: median age at first birth among women 25-29 Contraceptive prevalence rate 30.1% (2014/15) Net migration rate -2.8 migrant(s)/1,000 population (2018 est.) Country comparison to the world: 172nd Religions Roman Catholic 33.1%, Awakening Churches/Christian Revival 22.3%, Protestant 19.9%, Salutiste 2.2%, Muslim 1.6%, Kimbanguiste 1.5%, other 8.1%, none 11.3% (2010 est.) Dependency ratios total dependency ratio: 84.5 (2015 est.) youth dependency ratio: 78.3 (2015 est.) elderly dependency ratio: 6.2 (2015 est.) potential support ratio: 16.1 (2015 est.) Urbanization urban population: 68.7% of total population (2022) rate of urbanization: 3.19% annual rate of change (2020-25 est.) urban population: 66.9% of total population (2018) rate of urbanisation: 3.28% annual rate of change (2015-20 est.) Sex ratio at birth: 1.02 male(s)/female 0-14 years: 1.02 male(s)/female 15-24 years: 1 male(s)/female 25-54 years: 1.01 male(s)/female 55-64 years: 0.99 male(s)/female 65 years and over: 0.78 male(s)/female total population: 1.01 male(s)/female (2017 est.) Infant mortality rate total: 53.5 deaths/1,000 live births (2018 est.) male: 58.3 deaths/1,000 live births (2018 est.) female: 48.5 deaths/1,000 live births (2018 est.) Life expectancy at birth total population: 62.1 years. Country comparison to the world: 215th male: 60.65 years female: 63.61 years (2022 est.) total population: 60.3 years (2018 est.) male: 59 years (2018 est.) female: 61.6 years (2018 est.) HIV/AIDS Adult prevalence rate: 3.1% (2017 est.) People living with HIV/AIDS: 100,000 (2017 est.) HIV/AIDS deaths: 4,900 (2017 est.) Obesity - adult prevalence rate 9.6% (2016) Children under the age of 5 years underweight 12.3% (2015) Literacy definition: age 15 and over can read and write total population: 80.3% male: 86.1% female: 74.6% (2018) definition: age 15 and over can read and write (2015 est.) total population: 79.3% (2015 est.) male: 86.4% (2015 est.) female: 72.9% (2015 est.) School life expectancy (primary to tertiary education) total: 11 years (2012) male: 11 years (2012) female: 11 years (2012) Major infectious diseases degree of risk: very high (2020) food or waterborne diseases: bacterial and protozoal diarrhea, hepatitis A, and typhoid fever vectorborne diseases: malaria and dengue fever water contact diseases: schistosomiasis animal contact diseases: rabies note: on 21 March 2022, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; the Republic of the Congo is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain