1991 Comoros census

The Comorians inhabiting Grande Comore, Anjouan, and Mohéli (86% of the population) share African-Arab origins. Islam is the dominant religion, and Quranic schools for children reinforce its influence. Although Islamic culture is firmly established throughout, a small minority are Christian.

The most common language is Comorian, related to Swahili. French and Arabic also are spoken. About 89% of the population is literate.

The Comoros have had seven censuses since World War II:

Population density figures conceal a great disparity between the republic's most crowded island, Nzwani, which had a density of 470 persons per square kilometer in 1991; Ngazidja, which had a density of 250 persons per square kilometer in 1991; and Mwali, where the 1991 population density figure was 120 persons per square kilometer. Overall population density increased to about 285 persons per square kilometer by 1994. By comparison, estimates of the population density per square kilometer of the Indian Ocean's other island microstates ranged from 241 (Seychelles) to 690 (Maldives) in 1993. Given the rugged terrain of Ngazidja and Nzwani, and the dedication of extensive tracts to agriculture on all three islands, population pressures on the Comoros are becoming increasingly critical.

The age structure of the population of the Comoros is similar to that of many developing countries, in that the republic has a very large proportion of young people. In 1989, 46.4 percent of the population was under fifteen years of age, an above-average proportion even for sub-Saharan Africa. The population's rate of growth was a relatively high 3.5 percent per annum in the mid 1980s, up substantially from 2.0 percent in the mid-1970s and 2.1 percent in the mid-1960s.

In 1983 the Abdallah regime borrowed US$2.85 million from the International Development Association to devise a national family planning program. However, Islamic reservations about contraception made forthright advocacy and implementation of birth control programs politically hazardous, and consequently little was done in the way of public policy.

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