Columns: Country | Region | Joined OPEC | Population (July 2012) | Area (km²) | Production ( bbl /day)
Algeria | Africa | 1969 | 37367226 | 2381740 | 2,125,000 (16th) | Angola | Africa | 2007 | 18056072 | 1246700 | 1,948,000 (17th) | Iraq | Middle East | 1960 | 31129225 | 437072 | 3,200,000 (12th) | Kuwait | Middle East | 1960 | 2646314 | 17820 | 2,494,000 (10th) | Libya | Africa | 1962 | 5613380 | 1759540 | 2,210,000 (15th) | Nigeria | Africa | 1971 | 170123740 | 923768 | 2,211,000 (14th) | Qatar | Middle East | 1961 | 1951591 | 11437 | 1,213,000 (21st) | Saudi Arabia | Middle East | 1960 | 26534504 | 2149690 | 8,800,000 (1st) | United Arab Emirates | Middle East | 1967 | 5314317 | 83600 | 2,798,000 (8th) | Venezuela | South America | 1960 | 28047938 | 912050 | 2,472,000 (11th)