| Africa | Median age Total (2020 est.) | Male | Female | Obesity Pre. Rate % (2016 est.) | Mother’s mean age at first birth | Maternal Mortality Rate per 100,000 (2017 est.) | Contraceptive Preve. Use % |
| Burundi | 17.7 | 17.4 | 18 | 5.4 | 21.3 (2010 est.) | 548 | 28.5 (2016/17) |
| Comoros | 20.9 | 20.2 | 21.5 | 7.8 | 24.6 (2012 est.) | 273 | 19.4 (2012) |
| Djibouti | 24.9 | 23 | 26.4 | 13.5 | 248 | 19 (2012) | |
| Eritrea | 20.3 | 19.7 | 20.8 | 5 | 21.3 (2010 est.) | 480 | 8.4 (2010) |
| Ethiopia | 19.8 | 19.6 | 20.1 | 4.5 | 20 (2016 est.) | 401 | 40.1 (2018) |
| Kenya | 20 | 19.9 | 20.1 | 7.1 | 20.3 (2014 est.) | 342 | 60.5 (2017) |
| Madagascar | 20.3 | 20.1 | 20.5 | 5.3 | 19.5 (2008/09 est.) | 335 | 47.9 (2017) |
| Malawi | 16.8 | 16.7 | 16.9 | 5.8 | 18.9 (2015/16 est.) | 349 | 59.2 (2015/16) |
| Mauritius | 36.3 | 35 | 37.6 | 10.8 | .. | 61 | 63.8 (2014) |
| Mayotte (2010) | 17.3 | 18.1 | 16.5 | .. | .. | .. | .. |
| Mozambique | 17 | 16.3 | 17.6 | 7.2 | 18.9 (2011 est.) | 289 | 27.1 (2015) |
| Reunion (2006) | 26.9 | 25.7 | 28.1 | .. | .. | .. | .. |
| Rwanda | 19.7 | 18.9 | 20.4 | 5.8 | 23 (2014/15 est.) | 248 | 53.2 (2014/15) |
| Seychelles | 36.8 | 36.3 | 37.4 | 14 | .. | .. | .. |
| Somalia | 18.5 | 18.7 | 18.3 | 8.3 | .. | 829 | .. |
| South Sudan | 18.6 | 18.9 | 18.3 | 6.6 (2014) | .. | 1150 | 4 (2010) |
| Tanzania | 18.2 | 17.9 | 18.4 | 8.4 | 19.8 (2015/16 est.) | 524 | 38.4 (2015/16) |
| Uganda | 15.7 | 14.9 | 16.5 | 5.3 | 18.9 (2011 est.) | 375 | 41.8 (2018) |
| Zambia | 16.9 | 16.7 | 17 | 8.1 | 19.2 (2013/14 est.) | 213 | 49 (2013/14) |
| Zimbabwe | 20.5 | 20.3 | 20.6 | 15.5 | 20 (2015 est.) | 458 | 66.8 (2015) |
| Angola | 15.9 | 15.4 | 16.4 | 8.2 | 19.4 (2015/16 est.) | 241 | 13.7 (2015/16) |
| Cameroon | 18.5 | 18.2 | 18.8 | 11.4 | 19.7 (2011 est.) | 529 | 34.4 (2014) |
| Central African Rep. | 20 | 19.7 | 20.3 | 7.5 | .. | 829 | 15.2 (2010/11) |
| Chad | 16.1 | 15.6 | 16.5 | 6.1 | 17.9 (2014/15 est.) | 1140 | 5.7 (2014/15) |
| Congo, Rep. | 19.5 | 19.3 | 19.7 | 9.6 | 19.8 (2011/12 est.) | 378 | 30.1 (2014/15) |
| Congo (D.R.) | 16.7 | 16.5 | 16.8 | 6.7 | 19.9 (2013/14 est.) | 473 | 20.4 (2013/14) |
| Equatorial Guinea | 20.3 | 19.9 | 20.7 | 8 | .. | 301 | 12.6 (2011) |
| Gabon | 21 | 21.4 | 20.6 | 15 | 20.3 (2012 est.) | 252 | 31.1 (2012) |
| Sao Tome & Principe | 19.3 | 18.9 | 19.7 | 12.4 | 19.4 (2008/09 est.) | 130 | 40.6 (2014) |
| Algeria | 28.9 | 28.6 | 29.3 | 27.4 | .. | 112 | 57.1 (2012/13) |
| Egypt | 24.1 | 23.8 | 24.5 | 32 | 22.7 (2014 est.) | 37 | 58.5 (2014) |
| Libya | 25.8 | 25.9 | 25.7 | 32.5 | .. | 72 | 27.7 (2014) |
| Morocco | 29.1 | 28.7 | 29.6 | 26.1 | .. | 70 | 70.8 (2018) |