A majority of the population of Iran consists of Iranic peoples The largest groups in this category include Persians (who form the majority of the Iranian population) and Kurds, with smaller communities including Gilakis, Mazandaranis, Lurs, Tats, Talysh, and Baloch.
Turkic groups constitute a substantial minority of about 15–24%, the largest group being the Azerbaijani, who are the second largest ethnicity in Iran as well as the largest minority group. Other Turkic groups include the Turkmen and Qashqai peoples.
Arabs account for about 2–3% of the Iranian population. The remainder, amounting to about 1% of Iranian population, consists of a variety of minor groups, mainly comprising Assyrians, Armenians, Georgians, Circassians, and Mandaeans.
At the beginning of the 20th century, Iran had a total population of just below 10 million, with an approximate ethnic composition of: 6 million Persians (60%), 2.5 million Azeris (25%), 0.2 million Mazandaranis and Gilakis each (2% each).
The Kurds or the Kurdish people are an ethnic group in the Middle East, mostly inhabiting a contiguous area spanning adjacent parts of southeastern Turkey (Northern Kurdistan), northwestern Iran (Eastern Kurdistan), northern Iraq (Southern Kurdistan), and northern Syria (Western Kurdistan). The Kurds are culturally, historically and linguistically classified as belonging to the Iranian peoples.
Lurs are an Iranian people living mainly in western and south-western Iran. Lurs are the demographic majority of the provinces of Kohgiluyeh and Boyer-Ahmad, Ilam, Lorestan, and Chaharmahal and Bakhtiari. Half of Khuzestan’s population is Lur and 30% of Bushehr’s population is Lur
Lurish is a Western Iranian language continuum spoken by the Lurs in Western Asia
The Baloch or Baluch are a people who live mainly in the Balochistan region of the southeastern-most edge of the Iranian plateau in Pakistan, Iran, and Afghanistan, as well as in the Arabian Peninsula.
They mainly speak the Balochi language, a branch of Northwestern Iranian languages, and are an Iranic people. About 50% of the total Baloch population live in Balochistan, They make up nearly 3.6% of the Pakistani population, about 2% of Iran’s population (1.5 million) and about 2% of Afghanistan’s population
Baloch people co-inhabit desert and mountainous regions along with Pashtuns.