People
Nationality: Noun and adjective--Pakistan(i).
Population (2003 est.): 150,694,740.
Annual growth rate (2003): 5%.
Ethnic groups: Punjabi, Sindhi, Pathan (Pushtun), Baloch, Muhajir (i.e., Urdu-speaking immigrants from India and their descendants), Saraiki, Hazara.
Religions: Muslim 97%; small minorities of Christians, Hindus, and others.
Languages: Urdu (national and official), English, Punjabi, Sindhi, Pushtu, Balochi, Hindko, Brahui, Saraiki (Punjabi variant).
Education: Literacy (2003)--45.7%; male 59.8%; female 30.6%. Unofficial estimates are as low as 35%.
Health: Infant mortality rate (2003)--76.53/1,000. Life expectancy (2003)--men 61.3 yrs., women 63.14 yrs.
Work force (2000): Agriculture--44%; services--39%; industry--17%.

People of Pakistan
The majority of Pakistan's population lives along the Indus River valley and along an arc formed by the cities of Faisalabad, Lahore, Rawalpindi/Islamabad, and Peshawar. Although the official language of Pakistan is Urdu, it is spoken as a first language by only 8% of the population; 48% speak Punjabi, 12% Sindhi, 10% Saraiki, 8% Pashtu, and 14% other. Urdu, Punjabi, Pushtu, and Baloch are Indo-European languages. English is widely used within the government, the officer ranks of the military, and in many institutions of higher learning.
source: http://www.state.gov