๐ How Rare Are You in Iran?
๐ฎ๐ท Genetic Landscape of Iran
Iran sits at one of history's greatest genetic crossroads โ Persian, Turkic, Kurdish, Arab, Baloch, and Lur peoples blend into remarkable diversity. The Zagros Mountains fostered genetic isolation for millennia, creating distinct regional profiles. Northern Iranians from Gilan and Mazandaran show surprising rates of green and blue eyes (~15%), while southern populations near the Persian Gulf carry more Arab and South Asian markers. Iran's B blood type frequency (~27%) is among the highest outside of Asia.
Language maps the country as sharply as any border. Azerbaijani Turkish is everyday speech in the north-west around Tabriz, Kurdish runs along the western mountains, Arabic is spoken in Khuzestan near the Gulf, and Baluchi in the arid south-east. Two great deserts, the Dasht-e Kavir and the Dasht-e Lut, break the interior into oasis towns that caravans connected but distance kept apart. Family names, by contrast, are a recent arrival: they were only required by law in the 1920s, and many households simply took the name of the town they had come from. Tabrizi, Shirazi, Esfahani and Kermani are in effect addresses, so a surname often still records where a family stood a century ago.
๐ The Year That Starts at an Equinox
A birth date recorded by an Iranian government office is not a Gregorian one. Article 17 of the constitution sets the country's official calendar from the Hijra, recognises both the solar and lunar Hijri calendars, and puts government offices on the solar one. That calendar was legally adopted on 31 March 1925 and counts from 622 CE, so the year running 21 March 2026 to 20 March 2027 is 1405.
The months are uneven โ the first six have 31 days, the next five have 30, the last 29 or 30 โ but the part that matters for a birthday is the start. It is not a fixed date. 1 Farvardin is the day whose midnight start falls nearest the instant of the vernal equinox: if the equinox lands before noon Tehran time that day is 1 Farvardin, and if it lands after noon the year starts the next day. So the year is pinned to an astronomical instant reckoned in Tehran, Nowruz falls on 19, 20 or 21 March depending on the year, and the Gregorian date matching a given Iranian month and day can move by a day from one year to the next โ worth knowing before you feed a date to a birthday rarity tool.
๐๏ธ Eye Color
| Brown | 60% |
| Dark Brown | 15% |
| Hazel | 10% |
| Green | 8% |
| Blue | 5% |
| Gray | 2% |
๐ Hair Color
| Black | 55% |
| Dark Brown | 30% |
| Brown | 10% |
| Other | 5% |
๐ฉธ Blood Type
| O+ | 30% |
| A+ | 25% |
| B+ | 24% |
| AB+ | 7% |
| O- | 5% |
| A- | 5% |
| B- | 3% |
| AB- | 1% |
Trait frequencies on this page come from public and institutional datasets โ see Data Sources.
🧮 Calculate Your Rarity in Iran
Pick your eye colour, hair colour and blood type. The calculator uses Iran'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 Who Is Allowed to Collect Blood in Iran
The blood table above has to come from somewhere, and in Iran there is essentially one place it can. In 1974 a parliamentary law created the Iran Blood Transfusion Organization to bring every stage of transfusion, from recruiting donors to producing blood components and delivering blood products, under one body. The same law banned all other public and private organisations from any blood-transfusion activity. Since 2007 it has collected blood only from unpaid voluntary donors.
That is why the rows above rest on donor and hospital studies rather than on a population count, and why a national percentage here is an estimate rather than a tally. Donors are self-selected adults who met eligibility rules, not a random sample of anyone. Published figures also vary: a 2014 study of 1,534 donors attending the blood transfusion service in Ilam, in the west, found 91.1% Rh-positive and 8.9% Rh-negative, against the 86/14 split the eight rows above imply.
๐๏ธ Communities the Constitution Names
Iran's constitution names its recognised religious minorities and then reserves seats for them. Article 13 says Iranian Zoroastrians, Jews and Christians are the only recognised religious minorities, free to perform their rites within the law and to follow their own religion on personal status and religious teaching. Article 64 turns that into seats in the Majlis, the parliament.
Zoroastrians elect one representative and Jews one. Assyrian and Chaldean Christians jointly elect a single representative between them. Armenian Christians elect two โ one for the north of the country and one for the south, so those seats are split by geography as well as by community. Five in total, each named in the constitutional text itself. The same document is equally specific about writing: Article 15 makes Persian the official language and script and requires official documents, correspondence and textbooks to use it, while permitting regional languages in the press and mass media and in the teaching of their literature in schools.
โญ Rare Facts About Iran
Sources, and what they actually measure
The 88M tile is rounded from United Nations and World Bank estimates, not from an Iranian census. Iran's most recent national Population and Housing Census was run by the Statistical Center of Iran in 2016 and counted about 79.9 million. The blood percentages come from donor and hospital studies rather than from any population count โ since a 1974 law the Iran Blood Transfusion Organization is the only body permitted to collect blood in the country, so donor records are what exists. The height figure comes from pooled national health surveys. Every eye and hair colour percentage on this page is an estimate with no institutional source behind it โ see Data Sources. Last checked September 2026.