๐ How Rare Are You in Nigeria?
๐ณ๐ฌ Genetic Landscape of Nigeria
Nigeria is Africa's most populous nation and one of its most ethnically diverse, with over 250 ethnic groups speaking 500+ languages. The Yoruba, Hausa, and Igbo peoples each carry distinct genetic signatures shaped by millennia of independent evolution. Nigeria has the highest rate of natural twin births in the world, particularly among the Yoruba. While physical traits appear homogeneous on the surface, the genetic diversity within Nigeria rivals that of entire continents.
In Nigeria a name is often a small piece of biography. A Yoruba child can be named for the circumstances of arrival โ Taiwo and Kehinde for twins, Idowu for the child born after them, Abiodun for one born during a festival โ so an unusual birth is recorded in what a person is called for the rest of their life. Igbo names frequently mark the day of the four-day market week, with Okafor, Okeke, Okonkwo and Okoye pointing back to Afแป, Eke, Nkwแป and Orie. Most of these languages are tonal, so pitch separates words that look identical on paper. The Middle Belt around the Jos Plateau holds a density of small language communities that few regions anywhere can match.
๐๏ธ Where Nigeria's 230 million comes from
Every rarity figure on this page is a percentage multiplied by a population, so it is worth saying where that population came from. Nigeria's last census was enumerated between 21 and 27 March 2006 by the National Population Commission, and twenty years on it is still the most recent one. The National Bureau of Statistics built a forecast table on it — its own header note says the estimates are based on the 2006 census — starting at 140,431,790 for 2006 and reaching 193,392,517 for 2016. The table stops there.
So any current figure for Nigeria is modelled rather than counted. The World Bank's population series puts Nigeria at 232,679,478 for 2024, and the World Bank names the UN Population Division's World Population Prospects among that series' sources. The tile above rounds a number of that order down to 230 million. That is a sensible number to work with, and it is still a projection off a count twenty years old. Read the headcounts this page gives you as orders of magnitude, not as exact totals.
๐๏ธ Eye Color
| Dark Brown | 98% |
| Brown | 1.5% |
| Other | 0.5% |
๐ Hair Color
| Black | 99% |
| Dark Brown | 0.8% |
| Other | 0.2% |
๐ฉธ Blood Type
| O+ | 47% |
| A+ | 21% |
| B+ | 21% |
| AB+ | 3% |
| O- | 4% |
| A- | 2% |
| B- | 1.5% |
| AB- | 0.5% |
Trait frequencies on this page come from public and institutional datasets โ see Data Sources.
🧮 Calculate Your Rarity in Nigeria
Pick your eye colour, hair colour and blood type. The calculator uses Nigeria's own figures from the tables above, not world averages.
This is an estimate, not a measurement. It multiplies three national frequencies as if they were independent, and they are not: eye and hair colour share pigmentation genes, so a combination that tends to run together, such as blue eyes with blonde hair, is more common than the multiplication suggests, while one that rarely does, such as blue eyes with black hair, is rarer. Blood type is independent of both. The frequencies are national averages from public datasets — see Data Sources.
That number describes the body you were born with. Fraeon, our other site, does the same arithmetic for the part you chose: the films, series, games, books, anime and manga you have actually finished. Start your log →
๐ฉธ Rhesus negative is not one number in Nigeria
The blood table above gives a single Rh-negative share for the whole country. Published Nigerian work shows that any such number is an average over regions that differ a lot. A study of 160,431 samples collected in the Benin area of the Niger Delta between 1986 and 2005 found 6.03% Rh-D negative. The same paper lines that up against 5.46% among Yorubas, 3.3% among Yorubas at Ogbomosho and 1.44% from north-eastern Nigeria — 6.03% against 1.44% is roughly a fourfold gap.
The nearest thing to a pooled national picture is a 2017 review, which searched the published literature across Nigeria's six geopolitical zones and gathered 318,940 individuals for ABO and 280,514 for Rhesus: O 52.93%, A 22.77%, B 20.64%, AB 3.66%, and 94.90% Rh positive. Neither source is a survey of the whole population. The Benin samples came from blood donors, blood recipients, antenatal patients and people presenting for routine medical examinations; the review is an aggregate of whatever earlier studies had already been published. The calculator multiplies whatever blood figure it is handed, which means a regional gap this wide compounds. More on that in rarest blood type.
๐ฏ Twin births in southwest Nigeria, and the okra-soup theory
Twinning in southwest Nigeria has actually been counted. A study of 33,979 deliveries at four hospitals — in Ilesa, Ile-Ife, Ogbomoso and Ado-Ekiti — between January 1995 and December 2004 found 40.2 twin births per 1,000 deliveries, ranging from 46.5 at Ilesa down to 22.1 at Ado-Ekiti. Its authors write that this rate “ranks among the highest recorded rates of twin births in the world”. Among the highest, note, rather than the highest.
Igbo-Ora, in the same region, is known for its twins — it is not one of the four towns in that study, so the 40.2 figure is not its rate. What has been written up there is what people say about the cause. A 2020 PLOS ONE study of community perceptions recorded them: a blessing from God, a bond of twins running in families, ilasa (okra-leaf soup) eaten with amala, the town's water. The food explanation does not settle much on its own: those authors point out that the same foods are eaten in neighbouring communities with lower twinning rates, they say their results cannot be generalised beyond the people they spoke to, and they call for more directed studies.
โญ Rare Facts About Nigeria
What is measured here, and what is estimated
Population: the National Population Commission's 2006 census, still Nigeria's most recent, projected by the National Bureau of Statistics only as far as 2016; the 230M tile is a rounded modern estimate, not a count. Blood: the rows in the table are rounded approximations, and they do not match the published Nigerian studies described below — those studies are cited for what they actually found, not as the source of the table. Height: an estimate, with no Nigerian measurement cited for it. Eye and hair colour: we have no Nigerian census, register or survey that collects either, so those rows are approximations with no institutional source behind them. Last checked September 2026. Data sources.