eritrea has an estimated population of 5.7 million as of 2010. no reliable census data is available, the best available estimates being published by the population division of the united nations department of economic and social affairs. population has doubled over the past 30 years, with an accelerating growth rate estimated at close to 3.2% p.a. during 2005&ndash;2010. this rate of population growth is sustained despite a high emigration rate; the world bank as of 2010 estimated that close to a million of eritreans have emigrated.bilateral estimates of migrant stocks in 2010 estimates 942,000 emigrants, of whom 450,000 migrated to sudan and 290,000 to ethiopia. c.f. the world' bank's migration and remittances factbook 2011. the nation has nine recognized ethnic groups.cia - eritrea - ethnic groups according to sil ethnologue, the tigrinya make up about 50% of the population; the tigre, who also speak a south semitic language, constitute around 30% of residents. most of the rest of the population belong to other afro-asiatic-speaking communities of the cushitic branch. additionally, there are a number of arabic, nilo-saharan and italian-speaking ethnic minorities. a majority of eritrea's population adheres to abrahamic religions. estimates of the number christians vary from 36% to 48%; they predominantly belong to the eritrean orthodox tewahedo church. between 52% to 64% of the population is muslim, mainly following the sunni denomination. ==ethno-linguistic groups==  thumb|400px|ethno-demography of eritrea eritrea's population comprises nine recognized ethnic groups, most of whom speak languages from the semitic branch of the afro-asiatic family. the southern semitic languages spoken in eritrea are tigre, tigrinya, and the newly recognized dahlik. other afro-asiatic languages belonging to the [[cushitic languag
Eritrean_society Ethnic_groups_in_Eritrea